| 单词 |
penetrometer |
| 释义 |
penetrometer|pɛnɪˈtrɒmɪtə(r)|
[f. penetration + -ometer.]
1. An instrument for determining the consistency or hardness of a substance (as asphalt, soil or snow) by measuring the depth or rate of penetration of a rod or needle driven by a known force.
1905C. Richardson Mod. Asphalt Pavement ix. xxvi. 533 (heading) New York testing laboratory penetrometer. 1913Blanchard & Drowne Text-bk. Highway Engin. x. 293 Penetrometer to be used in accordance with standard method on materials solid at above temperatures. 1930Engineering 18 July 61/3 The penetrometer is simply a ½-in. square bar fitted loosely in guides and loaded with weights giving steps of about ½ ton per square foot. 1966C. Fraser Avalanche Enigma iv. 71 The first measurement taken is a penetrometer profile. 1971B. Buck tr. Ludewig's Polyester Fibres iv. 124 In order to determine the melting point, a grain of the polyester is placed into the container of the penetrometer and the needle is centred on the surface of [printed on] the substance under test. 1975D. Bagley Snow Tiger iv. 49 This is a penetrometer... It measures the resistance of the snow.
2. Obs. var. penetrameter. |
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