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【单选题】
主要与材料本身低塑性有关，不需要其他致脆因素的作用而形成的冷裂纹称为______。A.
氢致裂纹
B.
淬火裂纹
C.
低塑性脆化裂纹
D.
液化裂
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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