“水上排运”的概念、定义、翻译、参考文献-科学参考

单词	水上排运
释义	水上排运 Encyclopedia 农学木材运输释 raft transportation of timber水上排运利用各种索具，将单根原木或原条编扎成木排，然后借助水流的动力或拖船的牵引力，沿着水路（江河、湖泊、水库与海洋）进行运输木材的方式。
随便看	identity matrix; unit matrix identity modulo an ideal identity morphism identity natural transformation identity negotiation theory identity of logic, dialectics and theory of knowledge identity operation identity operator identity period identity permutation identity politics identity principle identity principle of microparticles identity problem identity property of clothing identity relation identity representation identity state identity subgroup identity theorem identity token identity transformation identity tree Identity: Youth and Crisis identometer

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。