“黑龙江水系航道”的概念、定义、翻译、参考文献-科学参考

单词	黑龙江水系航道
释义	黑龙江水系航道 Encyclopedia 工学内河航道网释 Heilongjiang River System Waterway黑龙江水系航道中国内河主要航道网之一。
随便看	commutative monoid commutative multiplication commutative operation commutative operator ring commutative operators commutative ordinal numbers commutative product commutative property commutative relation between differential operation and variational operation commutative ring commutative ringed space commutative scheme commutative semigroup commutative subgroup commutative subspace lattice commutative superalgebra commutative valuation commutativity commutativity condition commutativity relation commutator commutator algebra commutator calculus commutator closed group commutator factor group

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。