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second derivative 【数学】二阶导数,二次导数[参较 first derivative] 以上来源于:《21世纪大英汉词典》 second derivative‘数’第二导出 (集)Second derivative二阶导数second derivativen.(名詞 noun)【數】二階導數document.write('function myFunction(n){var c=document.getElementById("maintb").children;for(i=0 |