包装和食品机械行业
packaging and food machinery industry
包装机械行业
packaging machinery industry
机械行业标准
machinery industry standard
机械行业润滑剂
lubricant for mechanical industry
重型机械行业
Heavey machinery enterprises
重型机械行业网格
heavy mechanical industry grid HMG
便携式林业机械
portable forestry machine
potable forestry machine
portable forestry machinery
草业机械
herbage industry equipment
电焊机行业
electric welding machine profession
welding machine industry
welding machine profession
industry of electric welding machine
电机机械式扫描
electromechanical scannig
scanning
electromechanical
发动机机械故障研究
Research on the mechanical failure of the engine
纺纱机械机构
mechanism of spinning frame
风机机械特性曲线
mechanical characteristic curve of fan