... pipe bender 弯管机 pipe blockage 管道堵塞 pipe bore 管子内径 ...
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water-pipe blockage 水管堵塞
blockage of pipe 管路堵塞
Russia's space agency chief said the August rocket failure was an "isolated" glitch caused by a fuel pipe blockage.
BBC: Russia resumes manned Soyuz flights after crash
They have a big incentive to take care of the system, because if any one of them causes a blockage to his pipe, his neighbours will be in trouble too.
ECONOMIST: Clean up��or risk many deaths
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