素材表面严重粗糙，镀层无法覆盖平整。
The material surface coarse, coating can't cover serious level.
本机床适于磨削、铣销各种发动机的缸体、缸盖平面。
It suits for grinding and milling all kinds of cylinder boby and cover surface.
主天线位于手机顶部塑料盖平面部分内，可以在第二张、第三张图片上看到。
The main antennas are located near the flat plastic plates on the top and bottom of the phone, as seen in the second and third pictures.
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