“history of irrigation and drainage in the world”的概念、定义、翻译、参考文献-科学参考

单词	history of irrigation and drainage in the world
释义	history of irrigation and drainage in the world Encyclopedia 工学世界灌溉排水史释 history of irrigation and drainage in the world世界灌溉排水史人类利用河流和塘泊作为水源发展灌溉，并在河谷地区排干沼泽，开垦土地的发展史。
随便看	trivialization trivialized cobordism theory trivializing trivial knot trivial line bundle trivial link trivial loop trivial mapping trivial metric trivial module trivial nest trivial norm trivial operation trivial operator trivial ordered trivial ordered set trivial product trivial relation trivial representation trivial restriction trivial ring trivial section trivial set trivial shape trivial sheaf

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