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过热器的作用是将()蒸汽加热成一定温度和压力的()蒸汽。...
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问答题复合干燥器正常运行时应控制吸气压力在什么范围?压力露点表示什么?...
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某待测水头约为90米,现有0.5级0~2.94×106Pa 和1.0级0~0.98×106Pa的两块压力表,问用哪一块压...
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