就是耳背式助听器的耳机不位于机身内，而是置于佩戴者的耳道内。 一根由细导管包裹绝缘的细导线连接耳机与助听器机身。

This refers to the use of a BTE hearing aid where the receiver (loudspeaker) is placed outside of the hearing aid case and inside the wearer's ear canal.

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在有创操作后床边胸片能观察各种监护仪器、导线和导管位置以及有无并发症等。

The bedside chest radiograph has some limitation but it has importantly role in the etiological diagnosis, therapeutic effect observation and finding new abnormities of ICU patients.

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