用饱和蒸汽加热的，须增加鼓壁的厚度和重量。
Heated with saturated steam, to increase the drum wall thickness and weight.
水浴加热或蒸汽加热的效果不好，因为它不会产生能有效灭菌的高温。
A water bath or a steamer is not recommended since neither results in a sufficiently high temperature to produce effective sterilization.
采用直接蒸汽加热的泡罩塔用于甲醇和水的分离，具有回收效率高和操作费用低的优点。
The bubble cap column with direct steam heating was used for separating methanol and water.
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