信号部门，信号处

VOA标准英语2014--US Waivers Could Send Mixed Signals on Use of Child Soldiers

US Waivers Could Send Mixed Signals on Use of Child Soldiers STATE DEPARTMENT President Barack Obama has waived restrictions against providing military aid to six countries cited this year for using child soldiers. The countries, mostly in Africa, we

发表于:2018-12-16 / 阅读(23) / 评论(0)

VOA标准英语2014年(十月)

Earth and Sky:Plant Signals 植物的语言

Plant Signals 植物的语言 Can plants smell and taste in the same way that animals do? Can they talk to each other and to insects? Learn how scientists hope to unravel some of the mysteries of plant senses -- on today's Earth and Sky. JB: This is Eart

发表于:2019-01-02 / 阅读(111) / 评论(0)

(科普英语)Earth and Sky

VOA标准英语2008年-Monkeys Use Brain Signals To Operate Robotic Ar

By Jessica Berman Washington 28 May 2008 Monkeys have successfully operated robotic arms to feed themselves with human-like precision, activating a mechanical device with signals from their brain. Researchers say the technique could eventually be use

发表于:2019-01-09 / 阅读(46) / 评论(0)

VOA标准英语2008年（五月）

高中英语人教版高二下讲解11

[00:42.81]What do you usually say if you dial a wrong number? [00:48.35]I'm sorry,I think I dialled the wrong number. [00:58.38]What does Steve ask Pippa to do? [01:02.43]To go to a lecture [01:07.29]When and where is the lecture going to be given? [

发表于:2019-01-10 / 阅读(185) / 评论(0)

高中英语人教版高二

高中英语人教版高二下11

[00:04.78]Lesson 89 1 Dialogue [00:11.05]STEVE:Hello.Can I speak to Pippa,please? [00:13.27]喂!我可以找彼帕接电话吗? [00:15.49]VOICE:There's no Pippa here.This is 8686087. [00:19.51]这里没有彼帕这个人,这里的号码是8686087. [0

发表于:2019-01-10 / 阅读(186) / 评论(0)

高中英语人教版高二

黑匣子的工作原理

A possible break in the mystery of the missing Malaysia Airlines Flight 370 plane came when ships detected pings consistent with the aircraft's black box. But how does a black box actually work? Black boxes, or flight recorders, are electronic device

发表于:2019-02-17 / 阅读(327) / 评论(0)

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autocovariance spectrum

avelinoite (cyrilovite)

average commodity cost