下杆 meaning in English

lower beam

Find the number of degrees of rotation of the lower member .
求下杆转动的度数。
On topology - type optimization of trusses under multiple load cases
多工况下杆系结构拓扑型优化设计
The secret is the correct functioning of the right leg , with emphasis on maintaining the angle of the right knee on the back and forward swings
那个秘密就是关于他的右腿-强调在上杆和下杆时维持右膝关节的角度。
Bad hook always come from a series of wrong action : first , your coax sway toward target direction when down swing , which causes large space between the club and your back and swing through wholly from inside to outside
严重的左曲球通常来自一连串的错误动作：首先，开始下杆时，髋部过猛地向着目标方向摆动，致使球杆与身后的间隔过大，造成了完全从里到外的挥杆轨迹。