“直升机集材”的概念、定义、翻译、参考文献-科学参考

单词	直升机集材
释义	直升机集材 Encyclopedia 农学集材释 helicopter logging直升机集材在森林采运作业中，将各伐木地点伐倒的木材逐次逐根悬吊于直升机下面空运汇集到装车场（山上楞场、集运木材点）的集材作业。
随便看	canonical generator canonical height canonical homology canonical homology basis canonical homomorphism canonical hypersurface canonical image canonical imbedding canonical immersion canonical injection canonical integral canonical involution canonical kernel canonical linear connection canonical linear system canonical line bundle canonically associated bundle canonically bounded complex canonically bounded filtration canonically closed set canonically conjugate canonically conjugate coordinate canonically conjugate field canonically conjugate variable canonically isomorphic spaces

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