簧控制阀 spring controlled valve: 弹簧控制阀spring-controlled float valve: 弹簧操纵抚spring-valve controlled hydraulic brake: 弹簧活门控制液压制退机controlled valve: 可控阀spring valve: 弹簧阀; 弹簧活门; 气门弹簧下载手机词典可随时随地查词查翻译