包覆吸水性材料椭圆管
Ellipse type tube wrapped with absorbing water materials
带裂纹的椭圆孔口
elliptic hole with a straight crack
带双裂纹的椭圆孔口
elliptic hole with two straight cracks
多半径椭圆孔
multi-radius ellipse hole
多椭圆孔
multiple elliptical holes
精密椭圆管
precision ellipse welded pipe
矩形翅片椭圆管
rectangular finned elliptical tube
裂纹－圆－椭圆模型
crack-holeellipse interaction model
翘片椭圆管
elliptical tubes with fins
椭圆翅片椭圆管
elliptical fin-elliptical tube