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β (EN)
字母,符号

字母 “β”

β, beta
  1. 希腊字母表的第二个字母
    In geometry, angle β is opposite side b in the triangle.

符号 “β”

β
  1. (物理)表示贝塔粒子或贝塔辐射的符号。
    The scientist measured the β radiation emitted by the radioactive material.
  2. (化学)表示分子中第二位置或多个异构体中第二个的前缀。
    β-carotene is important for human health due to its role as a precursor of vitamin A.
  3. (语音学)国际音标中表示浊双唇擦音的符号。
    In Spanish, the sound [β] occurs between vowels in words like "hablar".
  4. (相对论)物体速度与光速的比率,定义为 β = v ⁄ c。
    As the spacecraft accelerated, its β value approached 1.