导叶操作机构主要包括：导叶臂压板、导叶臂、分瓣键、连接板、耳柄、剪断销、连杆销及压盖等。
Guide vane operation structure includes the guide vane arm clip board, guide vane arm, segmental keys, connection board, handle, cut pin, connecting rod pin and gland, etc.
一耳正常、另耳为传导性聋，测试患耳骨导时不需掩蔽；
When one ear normal and the other is the conductive impairment, need no masking when testing the diseased ear.
一耳正常、另耳为传导性聋，测试患耳骨导时不需掩蔽；
When one ear normal and the other is the conductive impairment, need no masking when testing the diseased ear.
应用推荐