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instrument for the study of the ear canal
instrument for the study of the ear canal
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机译:耳道研究仪器
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摘要
removable speculum for use in conjunction with a severe congestion. the speculum has a distal end connected with the soft, gummiartige tip, the canal protects and him with poet interference effectively. an inner seal is between the speculum and a recording surface on severe congestion.
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