一种三氯乙烯减压精馏装置，由加热系统、精馏塔、冷却器和接受容器组成。
The utility model relates to a pressure reducing rectifying apparatus for trichloroethylene, composed of a heating system, a rectifying tower, a cooler and a receiving container, etc.
通过减压精馏熔融结晶耦合技术研究提高人造麝香（DDHI）含量的原理和工艺流程。
The combined vacuum distillation and melt crystallization technology was used to purify DDHI from artificial musk.
反应产物经减压精馏、碱洗、水洗、干燥等精制处理，得到了纯度较高的M PC标准品。
The high-purity MPC standard sample was obtained by reduced pressure distillation and the removal of minor phenol with dilute sodium hydroxide solution.
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