| 单词 |
self-climbing tower crane |
| 释义 |
self-climbing tower crane climbing crane  clerestory, 1 A hoisting device used in the erection of high-rise buildings; a vertical mast is fastened to structural members of the building framework and is moved up as the structure rises during construction; a horizontal boom, equipped |
| 随便看 |
- smith, hamilton o.
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