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.
容器标准中规定的内件，如耳轴及支撑环的腐蚀余度应符合标准中的规定。
For the internal parts specified in Vessel Standard such as lugs and support rings, corrosion allowance shall conform to the stipulations in it.
唐铁嘴踏拉着鞋，身穿一件极长极脏的大布衫，耳上夹着几张小纸片，进来。
Soothsayer Tang enters in tattered shoes, wearing a very long and very filthy cotton gown, some scraps of paper tucked behind one ear.
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