spiral arm 中文意思是什麼

spiral arm 解釋
旋臂
  • spiral : adj 1 螺旋形的,盤旋的,盤旋上升的。2 【數學】螺線的。n 1 螺旋形物。2 螺簧;【物理學】螺線。3 【...
  • arm : n 1 臂,【動物;動物學】前肢。2 【機械工程】(輪)輻;【電學】線擔,支路,支架。3 臂狀物;衣袖;...
  1. Far out in the uncharted backwaters of the unfashionable end of the western spiral arm of the galaxy lies a small unregarded yellow sun

    在銀河系西螺旋臂的末端那片未曾標明的寂靜虛空中,懸掛著一顆不被人注意的小小的黃色太陽。
  2. Our sun is on the orion spiral arm, about two - third from the center

    太陽位於銀河系的獵戶臂,距離銀心約為半徑的三分之二。
  3. Interstellar hydrogen will emit a characteristic wave with wavelength 21cm. most of the sources of this wave are gas clouds in the spiral arms. second to the 21cm emission, the radio wave emitted by the molecular gas clouds in the arms are also good spiral arm tracers

    在旋臂中的氫氣分子云,會發射出波長為21厘米的無線電波,只要探測這些無線電波在天空中的強度分佈,便可推算出旋臂的結構。
  4. Spiral arm tracer

    示臂天體
  5. Suppose a spiral arm rotated around the center of its galaxy in about 250 million years - - as in the milky way

    假設一條旋臂繞其星系中心一周大約2 . 5億年,就像銀河一樣。
  6. Our distant sun cannot be seen here, but it is in the center of the image, near the border of one spiral arm

    我們遙遠的太陽在這里還看不到,但它在這幅圖的中心,靠近一條旋臂的邊緣。
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