对甲烷氯化物低沸塔底料泵机械密封频繁失效进行了分析，主要原因是物料中杂质进入和密封结构、材料不合理等。
Main reason for frequent failure on mechanical seal of low boiling column bottoms in the production of methane chloride is due to impurity entry and airproof structure, unreasonable material.
HC - 1高效金属切削液是以合成塔底油副产物为基料，经多元配伍而成。
The HC-1 high-efficiency metallic cutting liquid is made up of the byproduct of synthetical tower oil, and comes into form by several ways.
HC - 1高效金属切削液是以合成塔底油副产物为基料，经多元配伍而成。
The HC-1 high-efficiency metallic cutting liquid is made up of the byproduct of synthetical tower oil, and comes into form by several ways.
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