常見(jiàn)例句雙語(yǔ)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(guò)処理後比內(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.表麪硬化： 表麪硬化的緊固件是黑色金屬，其表麪經(jīng)過(guò)処理後比內(nèi)心硬度要高。blog.sina.com.cnGenerously 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，表麪硬化偽造和地麪齒輪，齒輪箱內(nèi)部和外部強(qiáng)化確保長(zhǎng)，維護(hù)成本低使用壽命。www.lei-de.com 返回 case hardened