丁锋8934
TEM有二层意思:
1. (= Transmission Electron Microscope [Microscopy]) 透射电子显微镜
2. (= Test for English Majors) 英语专业等级考试
3、Transmission electron microscope介绍:
透射电子显微镜(英语:Transmission electron microscope,缩写TEM),简称透射电镜,是把经加速和聚集的电子束投射到非常薄的样品上,电子与样品中的原子碰撞而改变方向,从而产生立体角散射。散射角的大小与样品的密度、厚度相关,因此可以形成明暗不同的影像。通常,透射电子显微镜的分辨率为0.1~0.2nm,放大倍数为几万~百万倍,用于观察超微结构,即小于0.2µm、光学显微镜下无法看清的结构,又称“亚显微结构”。
4、例句:
(1)fierce and frightening storm;Tempestuous storm惊涛骇浪
(2)The salinity and temperature of the water from submarine springs are indicators, which can be used for a detailed location of the spring mouth从水下泉出来的水的含盐度和温度可以作为泉口准确位置的指示。
(3)For the barking fat-faced mediocrity in the stagy black uniform he feels chiefly to be attempted, modified by caution对于身穿行头般黑军服的这个肥头胖脑、汪汪狂叫的庸才,他所感到的主要是给谨慎小心冲淡了的轻蔑。
(4)In COBOL,a statement that the content of an item is wholly alphabetic or wholly numeric.It may be true or false.COBOL语言中的一种语句,其项目的内容或者完全是字母或者完全是数字。它可以是真或伪。
(5)When a leaf or a stem is sliced, the plant signals pain (or perhaps merely dismay) by releasing the gas ethylene over its entire surface当植物的叶子或根茎被切开时,植物就发出痛苦的信号(或者也许仅仅是不高兴):在整个表面释放出气体乙烯。
(6)Put the problem into cold storage; temporarily put the problem aside; shelve the problem for the time being对这一问题予以冷处理
(7)Tom has a receding hairline,ie His hair has stopped growing at the forehead and temples.汤姆的前发际已渐渐后移(前额和太阳穴不再长头发).
(8)Despite the new tunnel, there are still a few people who rashly attempt to cross the Pass on foot.尽管修通了隧道,但仍有一些人想冒险徒步跨越圣伯纳德山口。
(9)A blasphemous statement非圣之论
(10)emper justice with mercy,ie be merciful when punishing sb justly法外施恩(惩罚某人时公正而仁慈).
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