平面力 meaning in English

plane stress

We defined the conditions of the plane stress distribution of thin plates subjected to in-plane forces .
我们定义了承受平面力的薄板平面应力分布条件。
Plane system of force
平面力系
Determination of shear strength for in - plane forces of joints between prefabricated components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure
带有开放结构的蒸气加气混凝土或轻集料混凝土预制构件之间接头处平面力方向抗剪切强度的测定