而自由跌落作为手机环境试验的一个重要试验项目，其属于实物试验，多在产品开发后期进行。
The free-drop examination with practicality is a vital item of environmental examination of mobile phone products, the examination is always performed in the anaphase of product development.
而自由跌落作为手机环境试验的一个重要试验项目，其属于实物试验，多在产品开发后期进行。
The free-drop examination with practicality is a vital item of environmental examination of mobile phone products, the examination is always performed in the anaphase of product development.
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