| 单词 | box metal |
| 释义 | > as lemmasbox metal ΚΠ 1855 B. F. Lawton U.S. Patent 13,465 1/1 My improved alloy consists of wrought iron, copper, tin, and arsenic combined in various proportions according to the degree of hardness, toughness, or other quality it is desired, to make it a superior alloy or box metal for either of the above named purposes. 1904 Lead & Zinc News 16 May 353/1 A mixture akin to bell metal (copper 84 parts, tin 16 parts) was termed ‘Box Metal’, and faithfully used to cast axle boxes, because it was found to wear well; but with the development of high speed, high pressure engines, carrying heavier burdens, the friction increased at such a rate..that engineers were compelled to modify the hardness of the bearing alloy. < as lemmas |
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