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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 、
英文名句短语
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
英语听力文摘 English Digest
Mind-Controlled Prosthetics Are Getting Closer Scientists and engineers are making substantial advances towards the ultimate goal in prosthetics creation of limbs that can be controlled by the wearers mind. Thanks to sophisticated sensors capable of
VOA标准英语2015年(五月)
SCIENCE IN THE NEWS -May 21, 2002: First electronically controlled animals / Study of mothers and their sons / Effects of global warming Broadcast: VOICE ONE: This is Sarah Long. VOICE TWO: And this i
科技之光
AS IT IS 2016-03-11 Aung San Suu Kyi 'Apologizes' to Supporters昂山素季为未能成为下届总统而道歉 The longtime opposition leader of Myanmar, Aung San Suu Kyi, has apologized for not becoming the countrys next president. She posted a let
2016年VOA慢速英语(三)月
By Al Pessin Pentagon 01 September 2006 A quarterly report by the U.S. Defense Department on the situation in Iraq says sectarian tension and attacks on civilians increased during the summer, in spite of progress toward building the new security for
2006年VOA标准英语（九月）