“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	topological entropy topological equisingularity topological equivalence topological extension topological fibering topological field topological field theory topological flow topological foliation topological function topological function theory topological functor topological generator topological geometry topological G-module topological graph topological graph theory topological group topological groupoid topological homeomorphism topological homomorphism topological identification topological immersion topological incidence structure topological index

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。