因此,必须选择适当的馏分油,用调合法使它满足市场的要求.And optimum selection of crude types to meet market requirements by blending is necessary.C5馏分油主要来源于石油烃高温裂解制乙烯过程的副产品,随着乙烯工业的发展,乙烯废弃的C5馏分量逐年增大.另一方面,民用燃料需要量颇为可观.C 5 distillate of ethylene access...
Leucorrhea sends out the different yellow story and has the turbid thing of white outflow!白带发黄异闻且有白色混浊物流出!David sends his warmest regards to your parents.戴维向你的父母致以最热烈的问候.It'sends up to 800 telexes a day , mostly as ...
None so blind as those who won't see.最瞎莫如视而不见。None of the pieces is insured.没有一件艺术品上过保险。Better some of a pudding than none of a pie.聊胜于无。Materials are all washable and none or minimum iron.料子可以洗,但勿用熨斗熨,或尽量少烫.A . Non...
按规定,18岁以下的人都不能参加.The regulations rule out anyone under the age of eighteen.旅馆的房客按规定要在中午十二点之前退房.Hotel guests are requested to vacate their rooms by twelve noon.按规定我们都要到场.The rules require us all to be present....