The machinability of gray iron was analyzed.
对灰铸铁的加工性能进行了分析。
Copper nickel, good machinability and bad crack resistance.
镍铜，易加工，但抗裂性较差。
Hard machinability of hard-brittle material is crucial for its application.
超硬脆材料的难加工性制约了其推广应用。
Hard machinability of hard-brittle material is crucial for its application.
超硬脆材料的难加工性制约了其推广应用。
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