Ungula and ring fracture are due to higher surface hardness.The rational suggestions to settle fracture are put forward.
爪形和环形断裂由表面硬度偏高造成,并提出解决断裂问
理化
议。
复数）Ungula and ring fracture are due to higher surface hardness.The rational suggestions to settle fracture are put forward.
爪形和环形断裂由表面硬度偏高造成,并提出解决断裂问理化议。
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