常見(jiàn)例句Ungula and ring fracture are due to higher surface hardness.The rational suggestions to settle fracture are put forward. 爪形和環(huán)形斷裂由表面硬度偏高造成,并提出解決斷裂問(wèn)題的合理化建議。ungula of the cone 錐的蹄狀體ungula of the cylinder 柱的蹄狀體ungula of the prism 棱柱的蹄狀體 返回 ungula