经过大量的力学实验，选择最佳倾斜角度，减缓重力作用，避免虚接打火。
Many dynamic experiments have shown that sockets in a proper angle can reduce self-stress and prevent virtual connection and fire striking.
经过大量的力学实验，选择最佳倾斜角度，减缓重力作用，避免插头松脱、虚接打火。
Many dynamic experiments have shown that sockets in a proper Angle can reduce self-stress and avoid virtual connection and fire striking.
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