No matter and no energy mean no warping and no gravity.
没有物质和能量，就表示没有时空弯曲也没有重力。
Heating printing platform, keep the temperature uniform, no warping in the bottom of the model.
加热打印平台：保证恒温打印，模型不翘边。
Heating printing platform, keep the temperature uniform, no warping in the bottom of the model.
加热打印平台：保证恒温打印，模型不翘边。
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