direct wave是什么意思

用法例句

The effect of material properties to wavy flange in high strength steel roll forming was investigated.

建立了可靠的辊弯成形数值模拟模型,研究了材料参数对高强钢辊弯成形产生边波的影响。

Design of The Mould Extending The Side of Cuts Perpendicularly to The Drawing of Thick Sheet;

厚板件拉深垂直切边模具的设计