“spiral pipe drainage system”的概念、定义、翻译、参考文献-科学参考

单词	spiral pipe drainage system
释义	spiral pipe drainage system Encyclopedia 工学实验排水系统释 spiral pipe drainage system螺旋管排水系统由专用的内螺旋管材、特殊旋流器管件和底部异径管件所组成的特殊单立管排水系统。
随便看	permutation relation permutation relationship permutation representation permutation representation of a group permutation rise permutation run permutation sequence permutation signature permutation symbol permutation symmetry permutation tensor permutation test permutation without repetition permutation with repetition permutation with restricted positions permutator permuted block design permuted code permuting relation permutohedron Perm’ Pernambuco Uprising pernicious anemia Pernik pernio, chilblain, frostbite

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