ADD#BAR#ELEM 增加桿元素#Point-Point 點-點Bar element between datum points.基準點之間的棒元素Point-Surface 點-曲面Bar element between datum points and its projection on surface.在點和點在曲面上投影之間的棒元素Point-Edge 點-邊Bar element between datum points and its projection on edge.在點和點在邊上投影之間的棒元素Chain 鏈Chain of bar elements.一鏈棒元素Curve 曲線Bar element along a datum curve.沿一基準曲線的棒元素。