请注意功能很少变化引起的各种手机模型中使用不同的硬件。
Please note that features have little variation due to different hardware used in various phone models.
我们医院目前用的听力计主要做患者的纯音听阅测试，其它功能很少用。
The audiometer that our hospital uses currently is mainly the sufferer's pure sound to listen to read a test, other functions seldom use.
现有的焦点模型非常令人头痛，因为它存在无数的错误，并且功能很少，比如不能查询当前哪个组件拥有焦点。
The existing focus model has been plagued by countless bugs and greatly lacks functionality, such as not being able to query which component currently has the focus.
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