了不起的中国工程

Brand: 科学普及出版社    Sold By: EM China
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程
了不起的中国工程

了不起的中国工程

Brand: 科学普及出版社    Sold By: EM China
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了不起的中国工程

了不起的中国工程

$43.55

编辑推荐

权威专家学者,联合创作审定。本书由20余位权威专家学者联合创作、审定而成,凝结众多科研人员多年心血成果,让青少年充分领略科技魅力。紧跟科学前沿,内容精益求精。19个振奋人心的科技工程,囊括了工业、农业、航天等众多领域,引导青少年深入浅出地学习、了解工程科技知识。探近现代科技,求新技术创新。从1952年南水北调工程方案设想的提出,到现在的火星探测,旨在带领青少年全方位了解中国近现代杰出的科技工程发明或创建过程。新时代科学技术的...

Product Details

编辑推荐

权威专家学者,联合创作审定。本书由20余位权威专家学者联合创作、审定而成,凝结众多科研人员多年心血成果,让青少年充分领略科技魅力。紧跟科学前沿,内容精益求精。19个振奋人心的科技工程,囊括了工业、农业、航天等众多领域,引导青少年深入浅出地学习、了解工程科技知识。探近现代科技,求新技术创新。从1952年南水北调工程方案设想的提出,到现在的火星探测,旨在带领青少年全方位了解中国近现代杰出的科技工程发明或创建过程。新时代科学技术的魅力,无时无刻不在激发青少年的探索欲和求知欲。培养工程师思维,弘扬科学家精神。从艰苦的研发环境到辉煌的研究成果,有助于青少年树立保家为国、造福百姓的伟大志向,培养忍辱负重、勇往争先的高尚情怀,弘扬创新为国、奉献求实的科学家精神。

 
内容简介

本书由20余位权威专家学者联合创作、审定而成,主要展示了中国近现代的重大的工程科技成就,包括工业、农业、航天等众多领域,如青藏铁路、城际高铁、特高压、北斗导航、深海探测、火星探测等共19个振奋人心的科技工程,向青少年展示了中国工程科技的智慧成果。

作者简介

中国工程院是中国工程技术界荣誉性、咨询性学术机构,国务院直属事业单位,中国工程院新闻办公室是中国工程院的一个组成机构,负责中国工程院的新闻宣传等事宜。

目  录
章 中国力量,改变世界
青藏铁路:高原上的铁路奇迹
杂交水稻:改变世界的一粒种子
激光照排:印刷的全新篇章
三峡工程:高峡出平湖的水利奇迹
高速铁路:“C”位出道的中国名片
南水北调:世纪工程重塑九州水网
“三北”防护林:守护祖国北疆生态安全的绿色屏障
西气东输:横贯神州的能源“大动脉”
西电东送:特高压输电助力远方来电
港珠澳大桥:联结三地的跨海通道
“两弹一星”:中华民族创建的辉煌伟业
“华龙一号”:核电的“自主创造”品牌
“蛟龙号”:载人潜水器勇探海洋之心
前  言
工程奇迹,塑造中国
列车载着刚刚游览过八达岭长城的旅客们驶出了青龙桥车站。几分钟前,这趟列车的车头和车尾刚完成了一次角色互换……虽然中国早已进入高速铁路时代,广袤的土地上奔跑着无数的动车组,但在青龙桥这段翻山的铁轨上,时间仿佛放慢了脚步,列车仍然遵循着古老而安全的限速标准前进着。
在古朴的青龙桥车站站房旁边,詹天佑先生的铜像静静地“凝视”着自己当年的杰作。据了解,1905年,詹天佑奉命主持修建京张铁路;1908年,当铁路修至青龙桥关沟段时,由于此地段坡度大、机车牵引力不足,詹天佑创造性地修建了“人”字形线路,即采用两台机车相互推拉折返的方法,让火车爬坡难问题迎刃而解。
如今,京张高铁与老京张铁路在青龙桥车站的正下方位置交会而过,为之前的“人”字形线路添上一横,重新组合变为一个“大”字。可以说,这是百年来继京张铁路后中国人创造的又一个奇迹。
这两项不同年代的工程奇迹,象征着中国人用勤劳与智慧创造美好生活的坚定信念。一个世纪以来,一代代工程技术人员凭着永不气馁、永不言败的坚定信念,缔造着中国光明的未来。
在线试读

2020年,从7月中旬开始,各个航天大国都开启了密集排队去火星的行程,先拉开序幕的是阿联酋航天局。2 0 2 0年7月2 0日5点5 8分,阿联酋航天局的“希望
号”火星探测器在日本鹿儿岛县种子岛太空中心发射升空;我国的“天问一号” 也于2020年7月23日12时41分,在海南文昌航天发射场发射升空;而大洋彼岸的美国宇航局的火星车“毅力号”也在同年的7月30日发射升空。
为什么各国要扎堆去火星呢?难道飞往火星还有所谓的“黄道吉日”? 答案是,YES! 但是这个“黄道吉日”并不是每年都有的,而是2 6个月才有一次!火星发射窗口期意味着这时可以使用较小花费将探测器送往火星,因此人类的火星探测活动通常也会每隔26个月出现一次高潮。
曾有人误认为,如果从地球上正对火星发射一个探测器,沿地球、火星两点之间的直线飞行,不就是短旅程吗?
答案是,不可能。
首先,火星不是静止的,而是不停地沿着自己的轨道绕太阳运行,即使探测器能正对火星飞行,它也不可能遇上火星。其次,由于太阳引力的作用,探测器不可能正对火星方向飞行,但是只要达到一定的起始速度,探测器就能在或长或短的预定时间内到达火星轨道,而不是到达火星。
由于火星在轨道上按自己的规律运行着,为了使探测器在到达火星轨道时,火星也正好运行到同一点与之相会,这就要求探测器从地球上出发时,火星与地球之间有一个特定的相对位置,这一相对位置对应的时间就叫发射窗口期。另外,由于探测器走得快,火星走得慢,所以探测器从地球发射时火星应在地球前方某一个位置。"

书摘插画
插图

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

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Nonreturnable Items

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  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

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Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

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For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

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编辑推荐

权威专家学者,联合创作审定。本书由20余位权威专家学者联合创作、审定而成,凝结众多科研人员多年心血成果,让青少年充分领略科技魅力。紧跟科学前沿,内容精益求精。19个振奋人心的科技工程,囊括了工业、农业、航天等众多领域,引导青少年深入浅出地学习、了解工程科技知识。探近现代科技,求新技术创新。从1952年南水北调工程方案设想的提出,到现在的火星探测,旨在带领青少年全方位了解中国近现代杰出的科技工程发明或创建过程。新时代科学技术的魅力,无时无刻不在激发青少年的探索欲和求知欲。培养工程师思维,弘扬科学家精神。从艰苦的研发环境到辉煌的研究成果,有助于青少年树立保家为国、造福百姓的伟大志向,培养忍辱负重、勇往争先的高尚情怀,弘扬创新为国、奉献求实的科学家精神。

 
内容简介

本书由20余位权威专家学者联合创作、审定而成,主要展示了中国近现代的重大的工程科技成就,包括工业、农业、航天等众多领域,如青藏铁路、城际高铁、特高压、北斗导航、深海探测、火星探测等共19个振奋人心的科技工程,向青少年展示了中国工程科技的智慧成果。

作者简介

中国工程院是中国工程技术界荣誉性、咨询性学术机构,国务院直属事业单位,中国工程院新闻办公室是中国工程院的一个组成机构,负责中国工程院的新闻宣传等事宜。

目  录
章 中国力量,改变世界
青藏铁路:高原上的铁路奇迹
杂交水稻:改变世界的一粒种子
激光照排:印刷的全新篇章
三峡工程:高峡出平湖的水利奇迹
高速铁路:“C”位出道的中国名片
南水北调:世纪工程重塑九州水网
“三北”防护林:守护祖国北疆生态安全的绿色屏障
西气东输:横贯神州的能源“大动脉”
西电东送:特高压输电助力远方来电
港珠澳大桥:联结三地的跨海通道
“两弹一星”:中华民族创建的辉煌伟业
“华龙一号”:核电的“自主创造”品牌
“蛟龙号”:载人潜水器勇探海洋之心
前  言
工程奇迹,塑造中国
列车载着刚刚游览过八达岭长城的旅客们驶出了青龙桥车站。几分钟前,这趟列车的车头和车尾刚完成了一次角色互换……虽然中国早已进入高速铁路时代,广袤的土地上奔跑着无数的动车组,但在青龙桥这段翻山的铁轨上,时间仿佛放慢了脚步,列车仍然遵循着古老而安全的限速标准前进着。
在古朴的青龙桥车站站房旁边,詹天佑先生的铜像静静地“凝视”着自己当年的杰作。据了解,1905年,詹天佑奉命主持修建京张铁路;1908年,当铁路修至青龙桥关沟段时,由于此地段坡度大、机车牵引力不足,詹天佑创造性地修建了“人”字形线路,即采用两台机车相互推拉折返的方法,让火车爬坡难问题迎刃而解。
如今,京张高铁与老京张铁路在青龙桥车站的正下方位置交会而过,为之前的“人”字形线路添上一横,重新组合变为一个“大”字。可以说,这是百年来继京张铁路后中国人创造的又一个奇迹。
这两项不同年代的工程奇迹,象征着中国人用勤劳与智慧创造美好生活的坚定信念。一个世纪以来,一代代工程技术人员凭着永不气馁、永不言败的坚定信念,缔造着中国光明的未来。
在线试读

2020年,从7月中旬开始,各个航天大国都开启了密集排队去火星的行程,先拉开序幕的是阿联酋航天局。2 0 2 0年7月2 0日5点5 8分,阿联酋航天局的“希望
号”火星探测器在日本鹿儿岛县种子岛太空中心发射升空;我国的“天问一号” 也于2020年7月23日12时41分,在海南文昌航天发射场发射升空;而大洋彼岸的美国宇航局的火星车“毅力号”也在同年的7月30日发射升空。
为什么各国要扎堆去火星呢?难道飞往火星还有所谓的“黄道吉日”? 答案是,YES! 但是这个“黄道吉日”并不是每年都有的,而是2 6个月才有一次!火星发射窗口期意味着这时可以使用较小花费将探测器送往火星,因此人类的火星探测活动通常也会每隔26个月出现一次高潮。
曾有人误认为,如果从地球上正对火星发射一个探测器,沿地球、火星两点之间的直线飞行,不就是短旅程吗?
答案是,不可能。
首先,火星不是静止的,而是不停地沿着自己的轨道绕太阳运行,即使探测器能正对火星飞行,它也不可能遇上火星。其次,由于太阳引力的作用,探测器不可能正对火星方向飞行,但是只要达到一定的起始速度,探测器就能在或长或短的预定时间内到达火星轨道,而不是到达火星。
由于火星在轨道上按自己的规律运行着,为了使探测器在到达火星轨道时,火星也正好运行到同一点与之相会,这就要求探测器从地球上出发时,火星与地球之间有一个特定的相对位置,这一相对位置对应的时间就叫发射窗口期。另外,由于探测器走得快,火星走得慢,所以探测器从地球发射时火星应在地球前方某一个位置。"

书摘插画
插图

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 636-312-5925

  • Email: cs@everymarket.com

 

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