Special tool motivated by gas, liquid or pipeline conveyance medium to cleanup the pipeline, which can carryover the electronic launcher instrument and the ground tracking device.

 
  • 由氣體、體或管道輸送介質(zhì)推動(dòng),用以清理管道的專(zhuān)用工具。它可以攜帶電子發(fā)射裝置與地面跟蹤儀器。
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国内精品美女A∨在线播放xuan