Both ends of the three-tiered water collecting branch pipe respectively communicate with the corresponding three-tiered horizontal water collecting pipe on both sides.
三层集水支管的两端分别与两侧相应的三层水平集水管相连通。
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.
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.
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。
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