Compared to atmospheric pressure hot water boiler, operational principle and characteristic of vacuum hot water boiler are narrated.
叙述了真空热水锅炉的工作原理、特点以及与常压热水锅炉的性能比较。
Compared to atmospheric pressure hot water boiler, operational principle and characteristic of vacuum hot water boiler are narrated.
叙述了真空热水锅炉的工作原理、特点以及与常压热水锅炉的性能比较。
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