control of purity

• 纯度的控制

control of purity的用法和样例：

例句

1. Control of the chemical purity of WFI presents few major problems.
   注射用水化学纯度的控制是主要问题。
2. A series of highly pure surfactants was synthesized.
   合成了一系列高纯度的表面活性剂。
3. If the API has a specification for microbiological purity, appropriate action limits for total microbial counts and objectionable organisms should be established and met.
   如果原料药有微生物纯度控制的指标，应制定合理的总的微生物和致病菌的限度。