石英主控振荡器;晶体主控振荡器

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(210) / 评论(0)

英文名句短语

侏罗纪搏击俱乐部第168期:全球变暖是罪魁祸首

The K-T boundary marks the end of the age of dinosaurs, and the beginning of the age of mammals. KT界限层标志着恐龙时代的终点和哺乳动物时代的开端。 But does the K-T boundary really signify the absolute end of all dinosaurs? 不过

发表于:2018-12-28 / 阅读(106) / 评论(0)

侏罗纪搏击俱乐部

英语听力文摘 English Digest 592、石英计时！

Keeping Time With Quartz Most people know that wrist watches commonly contain quartz. In fact, if you wear a watch, chances are its a quartz watch, since most watches is made today use quartz. But, you may not know what quartz has to do with keeping

发表于:2018-12-31 / 阅读(113) / 评论(0)

英语听力文摘 English Digest

盖茨:机器人也应缴所得税

Robots have at least one unfair advantage over human workers: they do not pay income tax. 与人类劳动者相比，机器人至少有一个不公平的优势：不用缴所得税。 Bill Gates, co-founder of Microsoft and the worlds richest man, th

发表于:2019-01-07 / 阅读(101) / 评论(0)

英语新闻

SSS 2010-12-09

This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Imagine climbing diamond mountains, or hiking around the graphite shores of a lake of tar. Sound a little sci-fi? Well a new discovery suggests planets like that

发表于:2019-01-08 / 阅读(113) / 评论(0)

Scientific American(十二)月

研究：幸运符有助提升恋爱运

Lucky talismans and charms provide a welcome boost in confidence during the search for The One, match.com has found. 婚恋交友网站默契网（match.com）发现，那些能给人带来幸运的护身符和幸运符能让人在寻找另一半的过

发表于:2019-01-08 / 阅读(74) / 评论(0)

实用英语

TED演讲:为什么玻璃是透明的(1)

Take a look out your window, put on your glasses if you wear them. 向窗外张望一下，有必要的话，戴上眼镜。 You might want to grab a pair of binoculars, too, or a magnifying lens. 也许你还想拿副望远镜或是放大镜。 Now,

发表于:2019-01-17 / 阅读(93) / 评论(0)

TED演讲教育篇

灯具专业英语词汇

紧凑型荧光灯 Compact Fluorescent Lamp 金卤灯 metal halide/halogen lamp 溴钨灯 Bromine tungsten lamp 汞灯 mercury lamp 钠灯 Sodium lamp 卤钨灯 Halogen tungsten lamp 碘钨灯 iodine tungsten lamp 氖灯/霓虹灯 neon lamp 石英灯

发表于:2019-01-17 / 阅读(128) / 评论(0)

实用英语

Twitter的收入数字反映了网络从桌面到电话的总体转变

JUDY WOODRUFF: And now to a second tech story, this about the public launch of Twitter.The social media giant announced late yesterday that it plans to raise $1 billion by offering shares soon through what's called an IPO. Started just seven years ag

发表于:2019-01-22 / 阅读(110) / 评论(0)

PBS访谈商业系列

生活大爆炸第二季第十七集_3

What? No, don't put me on hold. on hold：等着通电话什么? 别啊，别让我再等了。 -Howard：Do you believe him? 能相信吗？ Normally around women, he has the personality of a boiled potato. Normally：通常 personality：个性 bo

发表于:2019-01-28 / 阅读(125) / 评论(0)

生活大爆炸第二季

里约奥运会上巴西观众为啥嘘声不断

It didnt take long for the Brazilians to rewrite the norms of Olympic fandom. 巴西人没用几天就改写了奥运会观赛规则。 The list of Olympic participants targeted by Brazilian boos is long and varied: Russians, due to its doping scanda

发表于:2019-02-01 / 阅读(127) / 评论(0)

趣味英语

外贸英语：品质 Quality(一)

The goods are available in different qualities. 此货有多种不同的质量可供。 Nothing wrong will happen, so long as the quality of your article is good. 只要商品质量可靠，就不会发

发表于:2019-02-01 / 阅读(105) / 评论(0)

实用英语

2016年春季5大时尚新风潮

Fashion trends keep changing. Every season designers seem to enjoy surprising people with something new. 时尚潮流千变万化。每到新的一季，设计师们似乎都热衷于用新鲜事物惊艳我们的眼球。 This spring is no exception

发表于:2019-02-01 / 阅读(143) / 评论(0)

阅读空间

谁是《权力的游戏》真正的主角？数据分析告诉你

Theres a zillion characters in Game of Thrones, even after a bunch of them have been brutally bumped off. But among the likes of Tyrion, Bran, Dany, and pals, whos really the main character? A team of mathematicians used a power far beyond Melisandre

发表于:2019-02-07 / 阅读(97) / 评论(0)

阅读空间

宝石英语词汇

Aquamarine 海蓝宝，兰玉 Garden Crystal 绿幽灵 Azurite 兰铜矿 Aventurine 砂金水晶 Amethyst 紫水晶 Ametrine 紫黄晶 Amber 琥珀 Emerald 翠玉 Onyx 黑玛瑙 Opal 蛋白石 Obsidian 黑耀石 Carnelian 红玉髓 Calcite 方解石

发表于:2019-02-13 / 阅读(132) / 评论(0)

实用英语

和瓦肯人学问好：苹果新增星际迷航表情包

I have noted that the healthy release of emotion is frequently very unhealthy for those closest to you. Mr. Spock 我已经注意到，对自身有益的情感宣泄常常会伤及周围的亲人。斯波克 Ignoring the often sage advice of the grea

发表于:2019-02-18 / 阅读(86) / 评论(0)

阅读空间

万物简史第391期:浩瀚的海洋(10)

At 3,000 feet, their little porthole was subjected to nineteen tons of pressure per square inch. 到了900米，小舷窗受到的压力高达每平方厘米2.95吨。 Death at such a depth would have been instantaneous, as Beebe never failed to obse

发表于:2019-02-25 / 阅读(127) / 评论(0)

万物简史

双语有声阅读：黄水晶

Topaz Topaz is a hard, transparent mineral. It is a compound of aluminum, silica, and fluorine. Gem topaz is valuable. Jewelers call this variety of the stone precious topaz. The best-known precious topaz gems range in color from rich yellow to light

发表于:2019-02-25 / 阅读(121) / 评论(0)

双语有声阅读

经济学人443:瑞士手表与苹果手表这和看时间没有关系

Swiss watches and the Apple Watch 瑞士手表与苹果手表 It's not about time 这和看时间没有关系 Traditional watchmakers are confident they can see off Apple's new bauble 传统手表制造商有信心看到苹果华而不实的新玩意儿

发表于:2019-02-25 / 阅读(101) / 评论(0)

经济学人商业系列

经济学人377:手握乾坤,制表大师乔治·丹尼尔斯

George Daniels 手握乾坤：制表大师乔治丹尼尔斯 George Daniels, master watchmaker, died on October 21st, aged 85 近250年来最伟大的制表师乔治丹尼尔斯（George Daniels）于10月21日去世，享年85岁。 A SCHOOLBOY once

发表于:2019-02-25 / 阅读(116) / 评论(0)

经济学人综合

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学英语单词

acousticopalpebral

active cutting edge length

alcyone days

alkali cellulose

audit of accrued liability

automatic frequency regulator

Balcairn

be expressed

be level with someone

bearing test

blow-back