The first commercial device to use a transistor was the Sonotone 1010 hearing aid, created in 1953.

第一款使用晶体管的商品是诞生于1953年的Sonotone 1010助听器。

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The first commercial device to use a transistor was the Sonotone 1010 hearing aid, created in 1953.

第一款使用晶体管的商品是诞生于1953年的Sonotone 1010助听器。

youdao