The strength produced by the two hands must be even.No matter whenever you push transversely or obliquetly your hand movement must be straight.

 
  • 操作時(shí),雙手用力要均勻一致,推動(dòng)的方向無(wú)論是橫向的或是“八”形的斜向分推,移動(dòng)的軌跡都要保持直行。
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