螺纹 luówén screw thread Definitions Defs Origin Strokes Stroke Words Sentences Sents 螺纹钢 luówéngāng rebar Steel bars with a ribbed or threaded surface used to reinforce concrete.螺纹钻 luówénzuàn twist drill A steel drilling tool with spiral cutting edges along its body and grooves to allow for the removal of debris.
