... run-down legs 垂直的溢流管... run-down pipe 溢流管... run-in index 平行式索引平行式索引...
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run down pipe 放泄管
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The first trial run demonstrated that 1 km of high-density polyethylene pipe could be laid down over mountainous terrain and in windy conditions in just nine minutes.
FORBES: Startup Aims To Install Pipelines With Helicopters...Seriously!
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