"the tear duct was obstructed"
同义词： epithelial duct canal channel
以上来源于: WordNet
N-COUNT A duct is a pipe, tube, or channel which carries a liquid or gas. 输送管道
...a big air duct in the ceiling.
…天花板上一根粗大的导风管。
Servicing & Cleaning of Exhaust Kitchen Hood, Fan and Ducting.
清除厨房烟罩， 风扇，厨房风喉的油迹。
Determine heat gain and loss conditions in insulated ducting by reading register temperatures along a run.
沿管线读取通风调节器的温度读数，确定绝缘层的热增量和热损耗。
From the concrete ducting the hot dirty flue gas enters the booster fan and then passes the inlet of the GGH.
从混凝土烟道来的热脏烟气通过升压风机，再通过热交换器入口进入热交换器。
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