... polymer inclusion sorbent 聚合体包涵吸附剂 positive ion source正离子源 Postal Inspection Service 邮政检查业务,邮政检查处 ...
双语例句
1
We studied the effects of the amount of phthalic acid(H2PA), its positiveion and negative ion on photothermographic system based on silver benzotriazole as silver source.