It is recommended to analyse the oil sample for existence of metal particles.
如果发现磁堵上存在金属物质，则推荐取油样化验。
In this article a method of sample preparation of metal powder is introduced.
介绍了一种金属粉末样品的金相制样方法。
Preparation of coating microscopic sample is very difficult than general metal material.
与一般金属材料不同，金属镀层金相试样制备的技术难度要大得多。
An experimental method to heat a sample of metal rapidly is described in this pa-per.
研究了两种能对金属快速加热的高加热率实验装置。
An experimental method to heat a sample of metal rapidly is described in this pa-per.
研究了两种能对金属快速加热的高加热率实验装置。
应用推荐