| 单词 | rockwell number |
| 释义 | Rockwell numbernoun 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. Origin of Rockwell number1930–35, Americanism; named after Stanley P. Rockwell, 20th-century American metallurgist Words nearby Rockwell numberrock wall, rock wallaby, rockweed, Rockwell, Rockwell, Norman, Rockwell number, rock wool, rockwork, rock wren, rocky, Rocky Hill Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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