他此刻正在南美旅游观光。He's touring South America at this moment in time.因为正在使用很多昂贵的设备，所以我非常紧张。I get very nervous because I'm using a lot of expensive equipment.我们正在成为时装业的领军者之一。We are becoming one of the market leaders in...
The increase of the guanidine amount can improve the adsorption performance.胍基固载量的提高可以增加吸附剂对胆红素的吸附性能.Of thiazoles, sub Sulfonamide, guanidine type, thiuram type accelerator has activation.对噻唑类 、 次磺酰胺类 、 胍类 、 秋兰姆类促进剂有活化作用...