operating speedrunning rpmrunning speedservice speedspeed of operationspeed of servicetraveling speedtravelling speed运行: move; be in motion; run; wor ...速度: velocity; speed; blast; bat带运行速度: tape running speed磁带运行速度: tape running speed规定运行速度: schedule speed; scheduled speed下载手机词典可随时随地查词查翻译