| 单词 | rockwell number |
| 释义 | Rockwell number in American Englishnoun Metallurgy a numerical expression of the hardness of a metal as determined by a test (Rockwell test) made by indenting a test piece with a Brale, or with a steel ball of specific diameter, under two successive loads and measuring the resulting permanent indentation Word origin [1930–35, Amer.; named after Stanley P. Rockwell, 20th-century American metallurgist] |
| 随便看 |
|
英语词典包含298861条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。