滑移线理论是解刚塑性平面应变间题的一种有效方法，而圆扇形场则是常使用的。
The theory of slip-line field is an effective method for problems of plane strain of perfect plastic solids, and the circle-fan field is used frequently.
算好第一层所需的毛线，将其固定在圆上，散开成扇形，并查看是否存在空白区域。
To figure out how much yarn you need to cut for the first layer, just hold it on top of the circle, spread it out like a fan and see if there are any hollow areas.
分析了扇形和偏心圆两种平衡轴设计的要求以及平衡重低质量的设计原则。
In this paper the demands, the lowest mass design principle of balancer shaft of fan type and eccentric circle type balancer mass are analyzed.
应用推荐