suction valve
One who attends a funeral.
(idiomatic) For an indefinite number of days.
plural of cloudful
An automatic non-return valve that opens when the boiler is at less than atmospheric pressure so as to avoid any risk of vacuum collapse when a hot boiler is allowed to cool down out of service.
整備チームは、ボイラーが運転を停止して冷却される際に大気圧未満になったときに開いて真空破壊を防ぐ自動逆止弁を点検した。
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DiQt
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