new and old national standards
new and old national standards
新旧国标
以上为机器翻译结果，长、整句建议使用 人工翻译 。
-
In order to understand and use national standards of "Surface Roughness", this pa-per compares the new standard with the old one, summarizes their main differences.
前言：本文通过对《表面粗糙度》新、旧国标的对比，综述了新、旧标准间的不同之处，便于迅速了解和应用新标准。
youdao
更多双语例句