Partial derivative
[计] 偏导数, 偏微商
🧩 词语组成解析
derivative
[di'rivətiv]
n. [数]导数，微商;[化] 衍生物，派生物;[语]派生词;
adj. 衍生的;导出的;拷贝的;
🗣️ 情景例句
a portrait of the United States--
一幅美国的剪影--
The burden on likes is cheerfully borne.
爱挑的担子，就愉快轻松。
What invariably happens is that a great number of things choose to go wrong at precisely the same moment.
情况经常是这样的，许许多多的事情都偏偏赶在同一时刻出问题，