pressure maintenance的用法和樣例：
例句
- These tanks maintain system pressure below the relief setting of the relief valve.
這種膨脹罐將系統壓力保持在安全閥設置的排放壓力以下。 - Thus, delivery pressure remains constant even as cylinder pressure decays, eliminating the need for frequent control knob adjustment.
因此，即使鋼瓶壓力下降，調整器的輸出壓力保持恒定，從而不需要經(jīng)常調整控制鈕。
