字典網>> 英漢字典>> S開頭詞條>>second moment的意思 漢英字典second moment中文翻譯：【化】 二次矩字典網second moment英文解釋：名詞 second moment:the expected value of the square of the deviations of a random variable from the point of origin相關詞條：secondary key secondary phloem second order reaction secondary product second handtap secondary(optical)axis secondary air register second offence secondary villi secondary standard fuel