| 单词 | hammer-blow |
| 释义 | > as lemmashammer-blow hammer-blow n. a blow or stroke of a hammer; also in the steam-engine (see quot. 1887). ΚΠ 1887 Jrnl. Franklin Inst. Jan. 42 The so-called hammer-blow in locomotives is the irregularity of the pressure exerted between the wheel and rail, which arises from the vertically-unbalanced action of the counter-weights placed in the wheel to neutralize the horizontal action of the piston and other moving parts. < as lemmas |
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