两个自由羟基,都容易酯化.Both the free hydroxyl groups readily undergo esterification.多数情况下水解速度较酯化速度低得多.The rate of hydrolysis is for the most part significantly lower than the esterification rate.探讨了PET酯 化、聚合生产过程对熔体直接纺丝的影响.The effe...
livable trials and tribulations.可忍受的考验及磨难...the trials and tribulations of everyday life.日常生活的磨炼与艰难The film is about the trials and tribulations of adolescence.这部电影讲述了青春期的麻烦和苦恼.the tribulations of modern life现代生活的苦恼For m...
雷切尔对她在那里吃的新奇食物赞不绝口。Rachel raved about the new foods she ate while she was there.20世纪70年代晚期,一切都要新奇、时髦、标新立异。In the late Seventies, things had to be new, modern, revolutionary.每天都充满刺激和新奇。Every day was exciting and adventure...
这台凿岩机能钻透岩石.This drill can bore through rock.凿岩机是煤炭采掘不可缺少的工具.The rock drill is indispensable for digging coal mines.这种新式旋转凿岩机实际上是通过粉碎坚硬的岩石来开凿.The new rotary hammer virtually smashes its way through hard materials....
Barnes was resolved to moving on when his contract expired.合同到期以后,巴恩斯决定做点别的。He endured excruciating ago-nies before he finally expired.在最终离世前他经受了极大的痛苦。The period of validity of the agreement has expired.本协议的有效期已过。...
Their bejeweled weapons and gold - trimmed armor were lying untouched layer of dust.他们镶着宝石的武器和镶金的盔甲也未被触动的躺在厚厚的灰尘中.The crown was richly bejeweled.那皇冠上缀了好多珠宝.The crown is richly bejeweled.这皇冠上缀了好多珠宝....