真空干燥机的核心部件是一个真空干燥回收系统，还集成了媒体和循环加热，真空，和溶剂。
The vacuum dryer is the centerpiece of a vacuum drying system that also incorporates media heating and circulating, vacuum, and solvent-recovery components.
如果排气系统处于真空下，必须在打开排气阀后，逐渐引蒸汽来加热壳体。
If the exhaust system is under a vacuum, the casing must be warmed by gradually introducing the steam, after opening the exhaust valve.
在1963年，我们使用了内燃真空燃烧器的煤气加热系统。
In 1963, we evaluated an infrared vacuum combustion, gas heating system.
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