超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
超单元组合—超单元—单元划分
divition of “super unit combine—super unit—unit
梯形单头螺纹环
trapezoid single start thread ring
梯形单头塞规
trapezoid single start plug gauge
6节点三角形单元
6-node triangular element
半解析环形单元
Semi-analytical annular element
等参数四边形单元
isoparametric guadrilateral element
多边形单元
polygonal elements
Polygonal element
polygon element
polygons element
polygonal finite element
polygonal finite element method
二次应变之三角形单元
quadratic strain triangle element
二维三角形单元
two-dimensional triangular element
高精度三角形单元
high-precision triangular finite element