underpressure 中文意思是什麼
underpressure
解釋
低壓力；真空計壓力-
Because suction operations e. g. from floods are performed quite routinely, the pressure gauges are designed for indication of over - and underpressure
抽水工作在日常生活中十分常見例如排放洪水，因此，我們的壓力表上設計有過壓和欠壓指示裝置。
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