| 单词 |
helicopter yarding |
| 释义 |
helicopter yarding helicopter yarding[′hel·ə‚käp·tər ¦yard·iŋ] (forestry) A technique that uses a helicopter to bring logs from a forest to a wide level spot along a road where the logs can be loaded onto trucks for hauling to a sawmill; used where steep terrain and unstable ground makes it impossible to build roads without damaging watersheds. |
| 随便看 |
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