| 单词 | group spring |
| 释义 | > as lemmasgroup spring group spring n. U.S. Mechanics a spring composed of a group of individual helical springs held together in a metal container, typically used on railway vehicles. ΚΠ 1876 Sci. Amer. Suppl. 22 July 465/3 There are group springs of six coils each 3 in. diameter x 5½ in. high with cast-iron cap and base. 2000 U.S. Patent 6,158,381 9 The spring comprises at least one of a helical tension spring.., a group spring, a nested spring and a conical spring. < as lemmas |
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