This refers to the use of a miniature BTE hearing aid that is coupled to an ear insert or earmold (vented or unvented) via a tubing of approximately 0.8 mm inner diameter.
就是微型耳背式助听器用一根内径大约0.8毫米的细导管耦合到耳塞或者耳模（耳模可以
或者不通气孔）的验配方式。
This refers to the use of a miniature BTE hearing aid that is coupled to an ear insert or earmold (vented or unvented) via a tubing of approximately 0.8 mm inner diameter.
就是微型耳背式助听器用一根内径大约0.8毫米的细导管耦合到耳塞或者耳模（耳模可以或者不通气孔）的验配方式。
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