... barometric millimetre of mercury 毫米水银气压表 21世纪教育网 barometric pipe 气压真空管 baronette satin 男爵缎 ...
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The barometric pulse pressure method is a handy and effectual way for water pipe cleaning .
气压脉冲法是给水管道清洗的一种既方便、效果又好的方法。
Since the material of atmospheric condenser, barometric discharge pipe, pump casing of follow-up water ring vacuum pump, impeller, and moisture tank was upgraded and anticorrosive p...
对重点腐蚀部位的大气冷凝器、大气腿、后续水环真空泵泵壳、叶轮、水封罐等升级材料、泵壳内涂防腐涂料后，已运行两年，仍然完好。
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