单词：Schmitt circuit
单词：Schmitt circuit 相关文章
Science and technology. 科技。 Climate change. 气候变化。 Good news at last? 终于来了好消息？ The climate may not be as sensitive to carbon dioxide as previously believed. 气候对二氧化碳的敏感性可能低于先前的预期。
经济学人科技系列
GWEN IFILL:Next, the correlation between motorcycle casualties and helmet laws. Judy Woodruff has the story. JUDY WOODRUFF:Fatalities on the nation's roads may be declining, but motorcycle deaths are not. Those deaths have increased from about 3,200
PBS访谈社会系列
AS IT IS 2015-06-04 Animals Dying in California Oil Spill 无数动物死于加州石油泄漏 Dead animals have been found along the coast of Central California almost every day for the past two weeks. On May 19, a pipeline broke, releasing thousand
2015年VOA慢速英语(六)月
今天我们要讲几个在美国总统大选的竞选阶段常会用到的习惯用语。美国总统大选每四年举行一次。在大选年的前一年,准备竞争本党总统候选人提名的人士就已经在各州积极展开竞选活动了，
美国习惯用语
Climate change 气候变化 Good news at last? 终于来了好消息？ The climate may not be as sensitive to carbon dioxide as previously believed 气候对二氧化碳的敏感性可能低于先前的预期 CLIMATE science is famously complicated,
经济学人综合
JUDY WOODRUFF: For more on all of this and a look at some of the options before the military in the Bergdahl matter, we turn to New York Times reporter Eric Schmitt. And retired Lieutenant General Dana Chipman. He was the Army's judge advocate genera
PBS访谈社会系列