The mass fraction of n - butene in mixed C 4 from catalytic cracking after etherized was approximately 40 %.醚化后的催化裂化混合C4中含有质量分数约为40%的正丁烯,是生产丙烯的优质原料....
We left at teatime.我们是在下午晚些时候动身的。We stopped working at teatime.我们在用茶时停止了工作.She was allowed to amuse herself as she liked till teatime.她被允许随心所欲地一直玩到吃茶的时候....
Smear Vaseline on to your baby's skin to prevent soreness.给孩子皮肤上抹些凡士林以防止肿痛。Have awoken with soreness in your genitals which can not be explained.因生殖器痛得醒来而不能解释.Side effects include soreness and a minimal risk of infe...
He favors extending the school day and school year.他赞成增加每天的课时并延长学年。I belong to the school of thought that favors radical change.我属于激进派.They load him with favors.他们使他备受恩宠....
他已用墨水涂去了打字稿中的错误.He has inked out the mistakes in the typescript.这一行里有几个字被涂去了.Some words were blacked out in this line.该印刷工用墨水涂去所选之词.The printer inks out the selected word....