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- de forest coil 蜂巢线圈
- Lee de Forest invents the vacuum tube. 李.;德福雷斯特发明电子管。
- Audion: Elementary radio tube developed by Lee De Forest (patented 1907). 三极检波管:由美国的德福雷斯特所发明(1907年获专利权)的一种基本的电子管。
- And Infigen Inc. of De Forest, Wisconsin recently succeeded at cloning a partially humanized pig. 威斯康星州底弗莱斯特的因菲金公司最近成功地克隆了一种部分人性化了的猪。
- In 1905 Fleming produced the first diode in England and in 1906 De Forest made the first triode in the United States . 1905年弗莱明在英国制成了第一个二极管。1906年德.;福雷斯特在美国研制了第一个三极管。
- Lee de Forest reads a paper before an AIEE meeting on the Audion, first of the vacuum tubes that would make long distance radiotelephony possible. 电子管的首次使用将使长途无线电话变为可能。
- In addition to these two types of reducing agents, ” “ de forest, “ “ processing Tin ”, sulfourea ” and “ Langres ”, etc is also available for reducing agent. 不兴以上两类还原剂边，“德科林”、“加工锡”、“二氧冻硫脲”、“朗格勒”等也是可用的还原剂。
- De Forest:american electrical engineer who patented the triode electron tube (1907) that made possible the amplification and detection of radio waves. He originated radio news broadcasts in 1916. "德福雷斯特:美国电力工程师;获三极电子管的发明专利(1907年);该发明使无线电波的增幅和检波成为可能.;1916年他首创无线电新闻广播
- The forest will act as a defense against desert dust. 森林能起防御沙漠灰沙的作用。
- It is said that there are wolves in this forest. 据说这片森林里有狼。
- A large part of Africa is made up of thick forest. 非洲的大部分地区都是密林。
- A native or inhabitant of Rio de Janeiro, Brazil. 巴西里约热内卢人或里约热内卢的居民
- There is a leafy forest in our hometown. 在我们的家乡有一片树叶茂密的森林。
- There is a pine forest near our house. 我们家附近有片松树林。
- Evening dress is de rigueur at the Casino. 在赌博娱乐场要穿晚礼服。
- Billows of flame swept through the forest. 熊熊烈火席卷森林。
- Their intimate conversation made me feel de trop. 他们亲切交谈，使我感到自己是个多余的人。
- The forest was almost impassable. 森林几乎不可逾越。
- The regiment had a strong esprit de corps. 这个兵团有很强的团体精神。
- The path petered out deep in the forest. 小路漫漫消失在密林深处。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
