Prealloy
A prealloy or pre-alloy is a powder made up of elements and compounds that can be made into alloys. A typical prealloy might be a mixture of finely milled zinc and copper that can be made into brass at a later stage..
英汉双解词典包含3607232条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。