阀座密封负载和紧密性与反压力相关.Seating load and tightness is dependent on back pressure.不要安装在可能发生反压力的地方.Do not install where backpressure can occur.止回阀模块结构应该包括内 置 止动限止器,防止由于反压力造成阀瓣磨损.Check module construction shall include built - in ...
Some of the older telephones still only accept tokens.一些较老式的电话机仍然只收代币。Coin-operated telephones took 100, 200 and 500 lire coins.投币电话接受100，200和500里拉的硬币。All our rooms have direct dialling telephones.我们所有的房间都有直拨电话。...
Jules, the story's narrator, is an actress in her late thirties.这个故事的叙述者朱尔斯是个年近不惑的女演员。Suddenly, the narrator speaks in his most rhetorically elevated mode.突然，解说员开始用高昂煽情的语调解说起来。He listens and waits for the narrator t...
Early results on the photoelectric effect had not produced consistent results.有关光电效应的早期实验,并未取得协调一致的结果.This is obviously due to the Compton and photoelectric effects.很明显,这是由于康普顿效应与光电效应作用的缘故.Photoelectric spectrophotometer...
The uncertainty created by this situation must be confusing for you.这种局面所造成的不确定性肯定让你感到困惑。Legislation to that effect created fierce controversy both in Parliament and outside.那类立法在议会内外都引起了激烈的争论。Bedrooms have again been cr...
意大利的经济奇迹一直是个谜。The Italian economic miracle has always been a mystery.生命起源的确切详情仍是个谜。The precise details of the origins of life remain hidden.她是个谜。She was a puzzle....