Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studied. 环合反应采用乙醇钠作为Baker-Venkataraman重排反应的催化剂, 研究了影响反应的各个因素.
The World Series between the Atlanta Braves and Toronto Blue Jays is tied at one game apiece.世界系列赛上，亚特兰大勇士队和多伦多蓝鸟队双方各赢一场，战成平局。The autumn chrysanthemum braves the frost.秋菊傲霜.Braves cotton fabric on white satin.勇士在白色缎棉织物....
其葡萄园差不多紧挨着欧颂堡的葡萄园。Its vineyards are virtually contiguous with those of Ausone.我们在群山、河流和葡萄园构成的美丽画卷中漫步。We meandered through a landscape of mountains, rivers, and vineyards.这些葡萄园日渐没落。The vineyards were falling into ruin....
两辆汽车在结冰的路面上打滑。Two cars skidded on the icy pavement.几个行人在结冰的人行道上滑倒了.Several pedestrians had come to grief on the icy pavement.路上结冰,汽车轮子打滑.The car wheels would not bite because of the ice....
学业结束后，戈尔德施米特成了作曲家弗朗兹·施雷克尔的学生。After his education, Goldschmidt became a pupil of the composer Franz Schreker.刘易斯作为一位悟性很高的优秀作曲家崭露头角。Lewis emerges as a composer of distinction and sensitivity.作为一名职业作曲家，我十分感激第三电台。As a profes...
Sheet Metal , Metalworking Guillotine , Shear, Bend Shear , New , Used, Machinery Sheet Metal.采购产品金属板材, 金属加工(剪切, 弯曲)机械钣金.It is introduced the classification, composition and properties of metalworking fluids.介绍了金属加工液的分类,...