Anhydride - type curing agents require the application of heat to promote polymerization.酸酐类固化剂则要求加热以促进聚合反应.Exothermic reaction can be reduced by adding hexahydrophthalic anhydride to the phthalic anhydride.用六氢化邻苯二酸酐加入到邻...
别抱怨不好的事，要对好的事心存感恩。Instead of complaining about what's wrong, be grateful for what's right.我们从小就被教导借钱是不好的行为。We'd been brought up to think that borrowing money was bad.尽管工作繁忙，本尼却少有身体不好的时候。Despite his hectic ...