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.
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