| 单词 | knockmeter |
| 释义 | > as lemmasknockmeter knockmeter n. an instrument for measuring the intensity of knock in the cylinder of an internal-combustion engine. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > noise in > instrument for measuring bouncing-pin1930 knockmeter1934 1934 Jrnl. Royal Aeronaut. Soc. 38 353 Knock intensity is measured by a bouncing pin, in conjunction with either a knockmeter or a gas-evolution burette. 1960 V. B. Guthrie Petroleum Products Handbk. iv. 17 The test engine is equipped with a pressure-sensitive pickup mounted in the cylinder head in direct contact with the combustion chamber. A knockmeter is used in conjunction with this pressure-sensitive element to indicate on a scale the intensity of the engine knock... A fuel that is to be tested is brought up to a standard knock intensity, as indicated on the knockmeter, by adjustment of the engine compression ratio. < as lemmas |
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