theta

theta
[ˈθiːtə]
noun
  1. the eighth letter of the Greek alphabet (Θ, θ), transliterated as ‘th’
    希腊字母表中第八个字母(译写为th)
    ■(Theta)[followed by Latin genitive](Astronomy)the eighth star in a constellation
    (天文)θ星(星座中第八颗星)
    Theta Draconis.
    天龙座θ星。
    ■[as modifier](Chemistry)denoting a temperature at which a polymer solution behaves ideally as regards its osmotic pressure
    (化)θ温度
    ■[as modifier]denoting electrical activity observed in the brain under certain conditions, consisting of oscillations having a frequency of 4 to 7 hertz
    θ节律
    theta rhythm.
    θ节律。
symbol for
  1. ■(θ)temperature (especially in degrees Celsius)
    温度(尤指摄氏度)
    ■(θ)a plane angle
    飞机角度
    ■(θ)a polar coordinate. Often coupled with φ
    极坐标(常与φ成对使用)
语源
  1. Greek
英语宝典
考试词汇表