以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.Butyraldehyde 1,2 proparediol acetal was synthesized by using stannous chloride as catalyst.以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.Butyraldehyde 1,2 propanediol acetal was synthesized by using st...
The deckhouse has been staved in by the tremendous seas.甲板室已被巨浪打破.Checking structure integrity of superstructure ( deckhouse ) after welding.上层建筑焊后结构完整性检查.The arrangement of the accommodation & deckhouse is shown on the ...
这些真菌在它们的横壁中是具简单孔的横隔膜的.These fungi are septate with simple pores in their cross - walls.拉尔夫抓住了要领,运用横隔膜的气往贝壳里猛送.Ralph grasped the idea and hit the shell with air from his diaphragm.促使错误信号是那网力量演戏在横隔膜上.The actuating error si...