最大力下的非比例伸长率percentage non-proportional elongation at maximum force【材】
共点力concurrent force【力】;forces acting at the same point【力】
吸水力suction force, suction tension
零力系null-force system【物】
吸引力attractive force
粘力viscous force
分子间力intermolecular force
劳动力净增net addition to labour force【劳经】