craking line 裂纹
catalytic craking 催化裂化
No craking 无裂纹
StressCrossion Craking 应力腐蚀破裂
kuckle craking 扳指关节
knuckle-craking 扳指关节
craking catalysts 裂解催化剂
N any of several rails that occur in the Old World, such as the corncrake and the spotted crake 秧鸡 [zoology]
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