| 单词 | bucket-ladder |
| 释义 | > as lemmasbucket-ladder bucket-ladder n. (see quot. 1877). ΘΚΠ society > occupation and work > equipment > lifting or hoisting equipment > [noun] > elevator > bucket-elevator bucket-ladder1877 bucket-elevator1903 1877 Encycl. Brit. VII. 464/2 The main feature of the machine [sc. steam dredger] is the bucket-ladder... Along this ladder a series of buckets traverse which cut into the bottom..and return loaded with the excavated material. 1902 Encycl. Brit. XXVII. 529/1 Bucket-Ladder Dredgers. < as lemmas |
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