[铁路] 回动阀操纵杠杆 reverse gear operating lever: 换向齿轮操纵杆control valve operating lever: 控制阀操作杆operating valve lever: 操作阀杆reverse lever: 反转杠杆; 换向杆; 换向杠杆; 换向手柄; 回动杆reverse operating: 反向操作下载手机词典可随时随地查词查翻译