angle valve短语⁷⁵³⁵³ 基本例句 角阀 Relief angle valve. Pressure or vacuum can be specified. 活性炭罐蒸气排泄阀是由真空控制的。 dictall By using encrypting angle valve of steel cylinder, clients must fill gas at designated LPG filling station. 使用该钢瓶加密瓶阀后，只能在我们指定的液化气充装站才能充装。 assoges.com