In relation to the characteristics of electric reciprocating saw transmission machine, a complete motion sketch has been drawn and equivalent substitution has been done on the sketch.
针对电动往复锯传动机构的特点，完整地绘制了运动简图，并对此运动简图进行了等效代换。
Which kinds is the badminton motion project mark? Badminton doubles sketch map?
羽毛球运动项目分为哪几种？羽毛球双打示意图？
Which kinds is the badminton motion project mark? Badminton doubles sketch map?
羽毛球运动项目分为哪几种？羽毛球双打示意图？
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