If the path corresponds to a file, this function checks whether file size equals 0.

如果路径与文件对应，此函数将检查文件的大小是否等于0。

youdao

Suppose we were to graph a household's consumer spending as a function of cash-on-hand, which equals current income plus liquid assets, holding constant expected future income.

假设未来预期收入保持不变，画一个以家庭消费与库存现金的函数图---库存现金等于目前的收入加上流动资产。

youdao

The first section shows that the solution is optimal and that the objective function equals approximately 172667.

第一部分显示解是最佳的，目标函数约等于172667。

youdao

So, first, if I point out when l equals 0, when we have an s orbital, what you see is that angular part of the wave function is equal to a constant.

首先，如果ｌ等于０,那就是ｓ轨道，你们可以看到,它波函数的角度部分是一个常数。

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