电子束焊接

机械类词汇大全-21

841 、埋头铆钉 countersinkheadrivet 842 、埋头锥孔 countersink 843 、埋头螺栓 countersinkheadbolt 844 、埋头螺丝 countersinkheadscrew 845 、埋头钻 countersinkdrill 846 、

发表于:2018-11-29 / 阅读(234) / 评论(0)

英文名句短语

TED演讲:原子究竟有多小?(2)

So if you popped open the blueberry and were searching for the nucleus 如果你在蓝莓的内部搜索原子核，结果是一无所获。 You know what? It would be invisible. It's too small to see! 知道为什么吗？因为我们看不到它！它

发表于:2018-12-08 / 阅读(121) / 评论(0)

TED演讲教育篇

赖世雄学英语第四册 lesson 4

[00:00.00]Lesson 4 Atom [00:01.95]原子 [00:03.89]The really strange thing about atoms is that most of us will never see one. [00:08.87]原子最奇特之处在于绝大多数人永远也无法看到它。 [00:13.84]Atoms are so small that it's impo

发表于:2018-12-08 / 阅读(117) / 评论(0)

赖世雄学英语第四册

SSS 2011-09-27

This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, movin

发表于:2018-12-24 / 阅读(164) / 评论(0)

Scientific American(九)月

英语听力文摘 English Digest 655 富兰克林与他的毛皮实验

Ben Franklin And A Very Furry Situation When they hear the name Ben Franklin, many folks think of the Declaration of Independence, the Continental Congress and things like that. Not as many people remember that Franklin was an inventor . . . and a go

发表于:2018-12-31 / 阅读(98) / 评论(0)

英语听力文摘 English Digest

60秒科学:Forcing Electrons into Superconducting Line

Forcing Electrons into Superconducting Line In a study in the journal Nature researchers created a pseudo gap, in which electrons in superconducting materials line up just before flowing resistance-free. Sonya Buyting reports Imagine a world with lev

发表于:2019-01-02 / 阅读(268) / 评论(0)

60秒科学

机械类词汇大全-36

1471 、实践计划 realization 1472 、对比 contrast 1473 、对流 convection 1474 、对接 butt 1475 、对接合；对接榫 buttjoint 1476 、对接角榫 buttmitredjoint 1477 、对接焊

发表于:2019-01-03 / 阅读(150) / 评论(0)

英文名句短语

TED演讲:一项关于电动车的大胆计划(4)

You, today, buy gasoline miles. And we created electric miles. 现在大家买的是汽油里程。我们就创造电子里程。 And the price of electric miles ends up being a very interesting number. 电子里程价钱加起来是个有趣的数字。

发表于:2019-01-03 / 阅读(115) / 评论(0)

TED演讲科技篇

TED演讲:一项关于电动车的大胆计划(1)

So how would you run a whole country without oil? 怎么让一个国家在没有用石油的情况下运转？ That's the question that sort of hit me in the middle of a Davos afternoon about four years ago. 四年以前在Davos的一个下午，这个

发表于:2019-01-03 / 阅读(119) / 评论(0)

TED演讲科技篇

VOA慢速英语 2008 1207

VOICE ONE: I'm Phoebe Zimmermann. VOICE TWO: And I'm Steve Ember with People in America in VOA Special English. Today we tell about a man who made possible one of the most important communications devices ever created -- television. His name was Phi

发表于:2019-01-11 / 阅读(191) / 评论(0)

VOA慢速英语2008年（十二）月

TED演讲:为什么玻璃是透明的(2)

But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

发表于:2019-01-17 / 阅读(132) / 评论(0)

TED演讲教育篇

旅游口语情景对话第25天:如何询问旅行路线

第一句：What kind of tour do you have? 你们有什么样的旅行路线？ A: What kind of tour do you have? 你们有什么样的旅行路线？ B: We offer many kinds of tours. 我们提供多种路线。第二句：What can I see on the tour

发表于:2019-01-21 / 阅读(195) / 评论(0)

旅游英语口语情景对话

PEOPLE IN AMERICA - Philo Farnsworth

PEOPLE IN AMERICA - Philo Farnsworth By Paul Thompson Broadcast: Sunday, June 06, 2004 (MUSIC) VOICE ONE: I'm Phoebe Zimmermann. VOICE TWO: And I'm Steve Ember with People in America in VOA Special En

发表于:2019-01-30 / 阅读(179) / 评论(0)

People in America

交通工具之船体方面的词语

bulk head 散货船 cross deck 过桥甲板 tugboat 拖船 freeing-port 舷墙上的流水孔 barge 驳船 dead weight 载重量 oil tank 油船 tonnage 吨位 container vessel 集装箱船 stern 艉部 pusher 推论 sterm frame艏柱 ferry 轮渡 mi

发表于:2019-02-08 / 阅读(336) / 评论(0)

实用英语

英语词汇分类：冶金英语词汇

iron and steel industry 钢铁工业 ironworks 铁厂 foundry 铸造车间 steelworks, steel mill 钢厂 coking plant 炼焦厂 electrometallurgy 电冶金学 powder metallurgy 粉末冶金学 blast f

发表于:2019-02-11 / 阅读(171) / 评论(0)

英文语法词汇

工程词汇中英文对照

质量合格证书 certification of fitness 原材料 raw material 底板 bottom plate 垫层 cushion 侧壁 sidewall 中心线center line 条形基础 strip footing 附件 accessories 型钢 profile steel 钢板 steel plate 熔渣 slag 飞溅 weldin

发表于:2019-02-15 / 阅读(186) / 评论(0)

实用英语

【英语时差8,16】利用太阳能-下

PV solar technology is more complex. When sunlight hits a PV cell, electrons in the cell are knocked out of their orbits. Electric fields channel the electrons in a current used to generate electricity。 Unlike thermal solar panels, PV technology is

发表于:2019-02-15 / 阅读(107) / 评论(0)

英语时差8，16

万物简史第202期:威力巨大的原子(16)

It was while puzzling over this problem that Bohr was struck by a solution and dashed off his famous paper. Called On the Constitutions of Atoms and Molecules, the paper explained how electrons could keep from falling into the nucleus by suggesting t

发表于:2019-02-17 / 阅读(105) / 评论(0)

万物简史

机械英语词汇（二）

机械英语词汇（二）生产类 PCS Pieces 个(根,块等) PRS Pairs 双(对等) CTN Carton 卡通箱 PAL Pallet/skid 栈板 PO Purchasing Order 采购订单 MO Manufacture Order 生产单 D/C Date Code 生产日期码 ID/C Identification Code (供应商)识别码 SWR Special Work Reque

发表于:2019-02-18 / 阅读(171) / 评论(0)

英文语法词汇

万物简史第198期:威力巨大的原子(12)

Let us pause for a moment and consider the structure of the atom as we know it now. Every atom is made from three kinds of elementary particles: protons, which have a positive electrical charge; electrons, which have a negative electrical charge; and

发表于:2019-02-25 / 阅读(192) / 评论(0)

万物简史

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学英语单词

ADC (Analog-to-Digital converter)

be mentioned in despatches

Biggekerke

caprylic acid