预力混凝土 yùlìhùnníngtǔ prestressed concrete Definitions Defs Origin Strokes Stroke Words Sentences Sents 预力 預力 yùlì prestressing force (physics) a force applied to a structure or object before it is put into use to improve its strength or durability; also called 预应力 yùyìnglì混凝土 hùnníngtǔ noun concrete concrete; a building material made by mixing cement, sand, gravel, and water
