名词
中文翻译：零阶
同义词：
['first-order', 'primary-order']
例句：
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1.The zeroth-order derivative of a function is its slope at the point of interest.
一个函数的零阶导数是它关心点处的斜率。
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2. In mathematics, the zeroth-order term in a series represents the constant term.
在数学中，序列中的零阶项代表常数项。
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3. The zeroth-order polynomial has no real roots.
零阶多项式没有实根。