Generally eastern swords tend to be curved eg Yatagan, Shamshir, Mameluke Sword etc.
总体来说东方的刀剑倾向于具有一定的弧度,如土耳其弯刀、伊朗剑、马木努克式剑。
英语百科
Shamshir
A shamshir, shamsher, shamsheer or chimchir (from Persian:شمشیرshamshir) is a type of sabre with a curve that is considered radical for a sword: 5 to 15 degrees from tip to tip. The name is derived from Persian:شمشیرshamshīr, which means "sword" (in general). The radically curved sword family includes the shamshir, scimitar, Talwar, kilij, Pulwar and the Turko-Mongol saber.