corrugate
vt. (使某物)起皱褶,起皱纹,起波纹
n. 皱; 车辙; 畦; 沟
1. fold into ridges;
Good stiffness, outer cover of corrugate or smooth surface finished is weather proof.
胶管具有较好的挺性, 外胶层耐老化,表面有波纹型和平面型两种.
corrugatescorrugatedcorrugating
purse