论述了以相转移催化剂催化合成邻硝基茴香醚的新方法.The process of synthesizing o - nitroanisole by using phase - transfer catalyst was described.丁化羟基茴香醚: 一种白色蜡状的苯酚抗氧化剂, CHO, 用于保存脂肪和油, 尤指在食物中.BHa: a white, waxy phenolic antioxidant, CHO, used to p...
The Cincinnati Reds have levelled the score in the National League play-off against the Pittsburgh Pirates.在国家联盟季后赛中，辛辛那提红人队扳平了与匹兹堡海盗队的比分。We went to downtown Cincinnati today to see the trains.我们去辛辛那提市中心今天看到火车.He worked ...
Millson saw the workman, Terry, descending the ladder.米尔森看见工人特里正从梯子上下来。Only a skilled workman can split slate into layers.只有能工巧匠才能把板岩劈成石片。An ill workman quarrels with his tools..拙工匠抱怨家什不好使。A bad workman quarrels with his...
地板上他们一直跳舞的地方被磨损了.The floor was badly scuffed up where they had been dancing.若未妥善照料,引擎的部分将会被磨损.The engine parts will wear down if not properly cared for.这些黑漆皮鞋被磨损了.These patent leather shoes scuffed....