乙酰苯胺 、 己二酸和邻苯二甲酸氢钾可以使PVC结晶度增大.Acetanilide and hexane diacid, potassium hydrogen phthalate could improve PVC crystallinity.同时可以供应己二酸螺旋霉素,恩波酸螺旋霉素.Spiramycin adipate and spiramycin embonate are also available for animal use...
The shooting occurred in the 34th Precinct.枪击事件发生在第34警区。The Centre was a pedestrian precinct with a bandstand in the middle.该中心是步行商业区，正中央有一个室外音乐演奏台。a pedestrian precinct行人专用区The driver said impassively, " You better chec...