The hydrocarbon diperchlorate products have utility as detonatable sensitizers for explosives and alkylating agents.二过氯酸烃基酯产物可用作起爆药的敏化剂及作为烷化剂.Explosives were first written about only 600 years ago.仅仅在大约600多年之前,才有最初的记载.Po...
Fold the ironing board up so that it is flat.把熨衣板折起放平。But as other shops fold, the march of the superstores continues...但在其他商店纷纷关门倒闭之时，大型超市的强劲扩张势头却依旧不减。Fold the omelette in half...把煎蛋对折。Fold - out: Folded sheet in text w...