丢枪式油管输送射孔
Throw guns tubing convey perforating
输送机输送带张力调整
conveyor belt tension adjustment
织物输送带生产线
textile conveyor belt line
并行传送带式流水线
parallel conveyor belt flow shop
传送带式电炉
belt-conveyer type furnace
传送带式钼电阻炉
conveyer type molybdenum resistor furnace