“land roller”的概念、定义、翻译、参考文献-科学参考

单词	land roller
释义	land roller Encyclopedia 农学播种镇压器释 land roller播种镇压器用于播种后压实土壤表层的机具。
随便看	derived length of a group derived Lie algebra derived Lie group derived meaning derived module derived neighborhood derived norm derived normal model derived normal ring derived number derived operation derived operator derived partition derived phonetics derived polygon derived proportion derived protein derived quantity derived relation derived rule derived rule of inference derived Score derived series derived set derived sheaf

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