英语语法分析

The extracting features of metallography is the key to metallographic analysis.

金相图象特征信息提取是进行金相分析的关键。

Mainly its metallographic structure consists of acicular ferrite and martensite.

钢的组织主要由针状铁素体和马氏体两相组成。

The metallographic sample preparation of the stainless steel for surgical implants is studied.

对外科植入物不锈钢试样的制备进行了试验。