“trench engineering technology”的概念、定义、翻译、参考文献-科学参考

单词	trench engineering technology
释义	trench engineering technology Encyclopedia 理学沟洫工程技术释 trench engineering technology沟洫工程技术关于中国夏商周时期灌溉、排水渠系的记录与总结研究。沟洫系统肇始于夏，发展于商，至周代趋于规范化，在实施井田制的地区逐渐形成纵横交错的农田沟洫体系。
随便看	lead poisoning lead pollution of agricultural soils lead rail lead refinery lead-removing function of health food lead salt materials for 1～3μm infrared detectors lead screw lead screw grinding machine lead selenide leadship art lead shurry lead storage battery lead styphenate lead sub-carbonate lead sulfate lead sulfide lead sulphide lead telluride lead tetraacetate lead tetraoxide lead tetroxide lead-through lead time lead-time lead tin alloy

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