我公司生产的聚氯乙烯片材按等级可分为食品级和工业级两种。
Company production of PVC sheet can be divided into levels according to food grade and industrial grade two.
本文叙述了硬聚氯乙烯片材在热成型过程中的性能及变化规律。
It is related that the performance and regularity of which rigid PVC sheet is treated in forming process.
目的建立用涂碳式聚氯乙烯膜盐酸苯海拉明电极测定盐酸苯海拉明片含量的方法。
Objective to establish an accurate method to determine diphenhydramine hydrochloride by coated carbon PVC membrane selective electrode.
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