常见例句Optimization on speed of ashpan drive for gas furnace 煤气炉炉条机转速的优化DESIGNING ON TEMPERATURE CONTROL SYSTEM OF ASHPAN - ENGINE 炉条机温度控制系统的设计ashpan support 灰盘托ashpan axle guard 灰盘车轴护挡ashpan blower valve 灰盘吹风阀 返回 ashpan