急用！下面这段话怎么翻译？ 合并版： the color of acid layer should not be darker than that of the standard solution of 1000ml diluted acid containing 0.1g potassium dichromate. 网上还看到下面一种表达： the colour of acid shall not be deeper than that of standard solution containing 0.10g potassium bichromate in 1000 ml dilute acid. http:///enspc/spc/ ... p;cid=54&dlev=2 查看更多
不好意思，有点长，翻译不透，请大家看着改。？ 有些不对的。试着改一下： because the attached dusts will block gas stream channell of filter bag and lead to pressure drop increase, \the filter bag shall be cleaned by back purging. the filter is controlled by time-control sequence to open solenoid pulse valves in turn during automatic on-line pulse cleaning; nitrogen will be used for back wash gas. when start back-blow , the first valve will open within 30ms after receiving signal from time-control sequence, and for 50～300ms (adjustable); the high pressure gas in air tank will be spurt out from valve, blow back pipe and nozzle in moment, to form a eject gas stream. when spurt out from the nozzle, gas will form vaccum in short time around the nozzle. the air around will makeup rapidly, and then flow into filter bag along with the eject gas stream, so as to form induce gas stream, which is several times of eject gas stream volume. when high pressure eject gas spurt out from the nozzle, the volume will be increased due to pressure relief(according to formula: pv=c, where c is constant); the eject gas and induce gas will cause filter bag expansion rapidly after enter into filter bag. due to vibration caused by gas spurting, the dust accumilated on bag surface will be shaken down to filter bin. after complete blow back cleaning of corresponding rows of filter bags, the valve close. after 30~120s (adjustable), start the next valve to blow back. there is only one of filter bags in back blow cleaning, while other filter bags are still in service.查看更多
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