求翻译：ＺＦ齿轮钢具有淬透性带窄，；实际晶粒细，力学性能指标独特，成分合理，价格低谦等优点，本部分介绍了ＺＦ齿轮钢的五大技术指标－化学成分，淬火晶粒度，纯净度，淬透性，弯冲值的特点及检测方法。是什么意思？

ZF gear steel hardenability with a narrow; actual fine grain, the unique mechanical properties, ingredients and reasonable prices low Qian, etc., this section describes the five major steel ZF gear specifications - chemical composition, grain size hardening, purity, hardenability, bending and testin

ZF gear steel has quenched and sexual with narrow; the actual rondelles, detailed, and mechanical performance indicators, unique ingredients such as reasonable, low price him advantages, This section describes ZF gear steel on 5 major technical indicators - chemical composition, purity, and quenchin

The ZF gear steel has the hardened belt to be narrow; The actual crystal grain is thin, mechanics performance index is unique, the ingredient is reasonable, price low modest and so on merits, this part introduced the ZF gear steel five big technical specification - chemical composition, the quenchin

Hardenability of steels with ZF gear with narrow,; the actual grain of fine, the mechanical properties of unique, component reasonable and low price-besides the advantages, this section describes the ZF gear five specifications-chemical composition of steel, grain size of quenching, purity, hardenab

ZF gear steel hardenability with a narrow; actual fine grain, the unique mechanical properties, ingredients and reasonable prices low Qian, etc., this section describes the five major steel ZF gear specifications - chemical composition, grain size hardening, purity, hardenability, bending and testin