spatial circular hollow structural section truss
spatial curve simulation
CIRCULAR CURVE
回旋曲线
圆曲线
平面曲线计算程序
园曲线
圆弧曲线
既有圆曲线
圆点曲线
圆弧形曲线
circular curve location
easement-circular curve
Layout of circular curve
portion of circular curve
curve-curve intersection
transition curve；easement curve；spiral transition curve
CIRCULAR AND NON-CIRCULAR CROSS-SECTION BEAM
vibrating circular pipe line circular
approach to curve by curve
continuous cooling transformation curve CCT curve