key elements and structures
...要素和结构 经验归纳 思维规律演绎 [gap=444]Key Word:scientific theory, representotion and explanation, key elements and structures, empirical induction, logic deduction ..
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key elements and structures
关键元素和结构
以上为机器翻译结果，长、整句建议使用 人工翻译 。