水自动旁路装置 feedwater: 给水管路; 供水; 锅炉水; 进水automatic by pass valve: 自动旁通阀cam controlled automatic by-pass valve: 凸轮控制自动旁通阀pass private automatic switching system: 专用自动交换系统private automatic switching system(pass): 私用自动交换系统下载手机词典可随时随地查词查翻译