case hardened

常見例句

Case Hardened : a case hardened fastener is a fastener of ferrous material having a suce which has been made harder than the core.
外貌硬化：外貌硬化的緊固件是玄色金屬，其外貌經(jīng)過處理后比內(nèi)心硬度要高。
Case Hardened : a case hardened fastener is a fastener of ferrous material having a surface which has been made harder than the core.
表面硬化：表面硬化的緊固件是黑色金屬，其表面經(jīng)過處理后比內(nèi)心硬度要高。
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Generously dimensioned ball or roller bearings, case hardened forged and ground gears, and internally and externally reinforced gearboxes ensure a long, low maintenance service life.
大尺寸滾珠或滾子軸承，表面硬化偽造和地面齒輪，齒輪箱內(nèi)部和外部強(qiáng)化確保長，維護(hù)成本低使用壽命。
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