基本解释[农业科学]践踏单位英汉例句双语例句The trampling unit and trampling equivalent unit(TEU) are put forward for the first time in order to define the calculating standard and conversion standard of T.首次提出了践踏单位和践踏当量概念，以明确践踏强度的计算标准和折算标准。trampling unit更多例句词组短语短语trampling equivalent unit 践踏当量trampling unit更多词组专业释义农业科学践踏单位