英语词汇“Knoop”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

Knoop

释义

Knoop|nuːp, knuːp|
The name of Frederick Knoop (1878–1943), U.S. instrument-maker, used attrib. with reference to an indentation test devised by him, in which hardness is measured by the size of the indentation produced in a substance by a pyramidal diamond indenter of specified shape under a known load.
The pronunc. |knuːp| is used by members of the Knoop family.
1940Metals & Alloys Sept. 292/1 The article is a description of the Knoop Indenter, a new instrument for determining the micro-hardness of thin layers of metals.1945Amer. Mineralogist XXX. 595 The Knoop hardness of gypsum is approximately 32 to 45 or more, depending on orientation.1961E. Cameron Ore Microsc. iv. 75 The Knoop hardness (KV) is given by the formula KV (in kg/mm²) = 14230 × P/l² where P is the test load in grams, and l is the long diagonal of the indentation in 0·001 mm.1971Nature 14 Nov. 661/1 A study..on anisotropy in the hardness of crystals using the Knoop indenter.1971Brit. Jrnl. Nutrition XXVI. 234 The Knoop test of hardness..was applied to human nails.

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