| 单词 | valve-box |
| 释义 | > as lemmasvalve-box valve-box n. ΚΠ 1797 Encycl. Brit. XVII. 766/2 Above..is the seat of the lower steam valve, opening into the valve box. 1869 Eng. Mech. 3 Dec. 282/2 Take the high pressure valves out of the valve-box. < as lemmas |
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