摆动辗压成形是一种新的压力加工工艺，采用该工艺十分省力。
Swing and rolling forming is a new press work and Labour saving process.
从动螺旋伞齿轮的形状复杂，摆动辗压难度大。
Shape of spiral bevel driven gear is complex and rotary forging process is also difficult.
目的介绍一例双下肢火车辗压伤患儿的治疗。
Objective To introduce the treatment of the lower limbs crashed by train in a boy.
目的介绍一例双下肢火车辗压伤患儿的治疗。
Objective To introduce the treatment of the lower limbs crashed by train in a boy.
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