多氯化联苯在土壤中, 水中或空气中都无法分解, 只会继续累积.PCBs don't break down in soils, water or air, but carry on accumulating.建立了HPLC测定联苯菊酯含量的方法.An HPLC method for the determination of bifenthrin emulsifiable concentrates was developed.介绍...
只需拧一下阀门，气囊就能重新密封。The bag is resealed with a simple twist of the valve.他换掉了坏阀门。He replaced a dud valve.送料管干干净净, 所以我担心要是油不通过喷嘴, 阀门一定有毛病.The feed - pipe is as clean as a whistle, so I'm afraid, if the oil is not gettin...
He is a very rigorous man, very persnickety.他是个很严厉的人，非常挑剔。They're snobs -- stuck - up and uppity and persnickety.他们傲慢、自大又吹毛求疵.Everybody is ordinal introduce oneself how persnickety , each other of cross verbal sword...
牧师开始以单调而低沈的语调吟诵赞美诗.The clergyman began droning the psalm.他的其它作品包括赞美诗和情歌.His other works include motets and madrigals.合唱团只唱了最后一首赞美诗的两个段落。The choir has sung only two verses of the last hymn....