METHODS: The target compound was prepared by the bromination and amination reaction.方法: 用溴代及胺化反应合成了四甲基吡嗪衍生物.The effects of triacetoneamine concentration on hydrogenation and amination were discussed.论述了三丙酮胺纯度对加氢和还原胺化反应的影...
Traditionally, the marking out of entrance fairways and hazardous areas has been most important.传统上, 在航路口门和危险区域,是杆形浮标最重要的标识....the lush fairways and contoured greens of the course...球场上葱翠平坦的球道和起伏的绿地Fairway 4:405 yd , par...
...her heels clicking on the tiled floor, probably an irritating noise to other people within earshot...她的鞋跟踩在瓷砖地板上咯噔咯噔响，这声音可能会让听见的人觉得心烦Handpainted tiled murals for kitchens and bathrooms are Julie Eurich's speciali...
她穿着羊毛宽松裤和涡旋花纹宽袍。She was wearing wool slacks and a paisley smock.他穿着宽松裤和宽松衬衫，那是夏日夜晚的理想穿着。He was dressed in a pyjama and kurta, ideal for a summer evening.我穿上了一条高尔夫球宽松裤.I put on a pair of golfing slacks....