杀伤力不足 meaning in Chinese

underkill

Speaking only with iron dao and iron jian , iron jian is earlier than iron dao , because in ancient war iron jian had less execution that could not pierce heavy armor , then the ring - pommel straight back great dao took place of jian and was used as the main weapon on a large scale , and that is the real actual combating iron dao , namely han ring - pommel dao
就铁刀与铁剑而言，铁剑早与铁刀，由于在古代战争中铁剑的杀伤力不足以破重甲，于是环首直背的大刀取代了剑而被大规模用于战场成为主流兵器，这也就是真正意义上的实战铁刀即汉代环首刀。