...nequality；symmetric；cyclic；three-variables；n-variables；Judgment [gap=233]关键词：不等式；完全对称；轮换对称；三元； n 元；取等判定 ...
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three variables 三个变量的
three variables control 三冲量控制
function of three variables 三元函数
It focuses on three variables 该指数着重三个变量
This is for only three variables.
这针对的只是三个变量。
The Economist has crunched the Numbers and found that, based on reasonable assumptions about these three variables, China could overtake America in the next decade.
《经济学人》根据对这三个变量的合理预期做出仔细计算，发现中国可能在下个十年中超过美国。
Here you have three variables that you will reduce to two by figuring out what the surface is.
而空间中存在三个变量，需要了解曲面是怎样的，然后去掉一个变量。
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