Based on the process principle, equipment, safety and economic analysis, options for ethylene oxide (EO) storage tank operating at variable pressures are put forward.

本文从工艺原理、设备、安全及经济分析方面，提出环氧乙烷贮罐变压运行的方案。

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The paper introduces the composition and operating situation of natural stratified water storage air conditioning in Nanning Wharton International Hotel and does economic analysis.

介绍南宁沃顿国际大酒店的自然分层的水蓄冷空调的构成及运行情况，并进行了经济性分析。

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Introduces the structure. function. main property. operating steps and multi-molds curing process of autoclave bag, and makes a analysis of its social and economic benefits.

介绍了自行研制开发的工程胎胶囊定型机的结构、功能、主要特点、操作步骤及硫化罐胶囊多模硫化工艺，并对其社会及经济效益作了分析。

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