phi
- n. 希腊字母表的第 21 个字母（大写 Φ，小写 φ）；（数学、物理学等）小写希腊字母 φ 用作符号，可表示黄金比例、角度、相位等；Phi Beta Kappa 美国大学优等生荣誉学会；（天文学）φ星
柯林斯英汉双解大词典
phi /faɪ/
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1.
N the 21st letter in the Greek alphabet (Φ, φ), a consonant, transliterated as ph or f 希腊语的第二十一个字母：Φ，φ，译为ph或f
双语例句原声例句权威例句
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Moving rapidly through school, he graduated Phi Beta Kappa from the University of Kentucky at age 18.
在学校进步迅速，他十八岁时以优等生身份从肯塔基大学毕业。
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That's phi is the angle downwards from the z axis.
这个角度是φ，它是从z轴偏转的角度。
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So, there's two ways to draw the letter phi, by the way.
其实，这个字母有两种书写方式。
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This is because most fraternities and sororities are named after a series of Greek letters, such as Alpha Delta Pi or Sigma Phi.
VOA: special.2009.09.25
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How far you are away from the nucleus in terms of a radius, they don't depend at all on those two angles, theta they're independent of theta phi and they're independent of phi.
只和离核子的距离，也就是半径有关，它们和,另外两个角度无关，它们不决定于,也不决定于。
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And the nodal plane's going to be in the x z plane, or again, anywhere where phi is going to be equal to 0, that takes us to the x z plane.
节面是ｘｚ平面，又或者说是phi等于０的地方，这就是ｘｚ面。
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