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锯齿状断口 jùchǐzhuàng duànkǒu
met. ragged fracture; saw-toothed fracture; hackly fracture (金属的); sawtoothed fracture
oil hackly fracture
space hackly fracture (金属断裂的)
tech. jag; zigzag fault
金属锯齿状断口 jùchǐzhuàng duànkǒu
met. hackly fracture