腐殖酸通常被看作是芳烃化合物的聚合物.Humic acids are usually regarded as polymers of aromatic compounds.芳烃加氢饱和及开环反应是一种提高柴油十六烷值的有效途径.Its hydrogenation activity in aromatics saturation and ring opening activity were investigated.扬子石化芳烃厂吸附塔出...
What if I operate my pump at a very low level for sump cleanout purposes?如果为了清理污水坑,我不得不使泵运行在低水位,这时会出现什么情况?I have a file cleanout day scheduled in my tickler file or calendar a year.在我的提示系统或日程表中安排每一年有几天专门清算文件.I’ve just gi...
只有一名穿制服的无聊警卫可能偷听到了他们的谈话。Only a uniformed guard stultified with boredom might have overheard them.厨房内充斥着烘干制服的难闻气味。The kitchen was rank with the smell of drying uniforms.由穿制服的男仆为客人倒茶。The tea was served to guests by liverie...