正比例

缩写：zbl

拼音：zhèng bǐ lì

解释：对于两个相互关联的量x和y，如果在变化过程中它们的比值保持不变，则称此两个量x与y成正比例，记作x∝y或x＝ky，非零常数k称为比例常数。

更新时间：2024-10-05 23:35

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