对于定义域为[0,1]的函数f（x），如果同时满足一下三条：1.对任意的x∈[0,1]，总有f（x）>=0；2.f（1）=1；3.若x1>=0，x2>=0,x1+x2<=1，都有f（x1+x2）>=f(x1）+（x2)成立，则称函数f（x）为理想函数。
理想函数
双语例句原声例句
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这意味着在理想的情况下，您仅需要运行选择器一次，并且能够轻松地将所有函数连接在一起，或缓存结果供以后使用。
This means that under ideal situations, you might only need to run the selection once, with the ability to daisy-chain your functions together, or cache the results for future use.
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而其内置的字符串操纵函数(包括正则表达式)，以及程序上的特性和方便性使它成为创建简单“脚本”程序的理想语言。
And its built-in string manipulation functions (including regular expressions), as well as procedural and convenience features make it the ideal language for creating simple "scripting" programs.
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理想情况下，这两个函数的使用应该限于对界面的拖放，因为这种情况下单击不会有合适的替代。
Ideally, the use of these two functions should be limited to dragging and dropping interfaces, where the click would not make a suitable replacement.
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So that you could see that for the ideal gas, u would not be a function of volume, but only of temperature.
所以我们可以看到对理想气体，内能不依赖于体积，而仅仅是温度的函数。
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So for an ideal gas, we saw that u was only a function of temperature.
对于理想气体，我们知道内能只是温度的函数。
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Pressure has dropped out of the picture completely here. So there is no p dependence here.
理想气体的H只是温度的函数,这对于真实气体来说是。
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