| 单词 | valve casing |
| 释义 | > as lemmasvalve casing valve casing n. ΚΠ 1839 R. S. Robinson Naut. Steam Engine Explained 44 The flange to which is bolted the valve casing. 1887 D. A. Low Introd. Machine Drawing (1892) 74 An elevation of the valve casing with the cover and the valve removed. < as lemmas |
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