Objective: To study the sealing up method of intravenous trocar.
目的：探讨静脉留置套管针封管方法。
Objective To set up a method of detecting trace adhesives and the heat sealing material for food packaging.
目的研究食品包装封口处粘合剂和封口材料成份的检验方法并对两例食品中毒案进行检验。
Objective To set up a method of detecting trace adhesives and the heat sealing material for food packaging.
目的研究食品包装封口处粘合剂和封口材料成份的检验方法并对两例食品中毒案进行检验。
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