... 通风橱，烟橱：fume hood 通耳：improving hearing 通道清洗接管：adapter for channel cleaning ...
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有些通径的阀门没有双法兰结构，对于这些通径的阀门，可提供凸耳阀 体结构，请参阅第12页。
Sizes not available in double flange design are offered as lug body design, see page 12.
该示教听诊器在下胶管中都接有一个将主、副耳件及胸件接通的三通接头。
A three-way piece which causes the main ear piece, the auxiliary ear piece and the chest piece to communicate is connected in the bottom rubber pipe of the stethoscope for teaching.
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