彈簧安全閥 spring-loaded relief valve: 彈簧安全閥spring loaded pressure relief valve: 彈簧加載的壓力泄放閥spring-loaded pressure relief valve: 彈簧式安全閥automatic spring loaded valve: 自動(dòng)彈簧閥spring and lever loaded valve: 彈簧平衡閥下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯