柴油机机油冷却器
diesel oil cooler
lube oil cooler for diesel engine
柴油机燃油喷射系统
Diesel fuel injection system
柴油机燃油系统
the diesel engine fuel system
电机机械式扫描
electromechanical scannig
scanning
electromechanical
发动机机油泵安装螺栓
engine oil pump mounting bolt
发动机机油泵传动齿轮
engine oil pump drive gear
发动机机油泵中间齿轮
engine oil pump idler gear