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词汇
星際物質
释义
星際物質
xīng jì wù zhí
恆星間密度極稀的物質。包括佔90%的氣體和10%的塵埃微粒,以及宇宙線和磁場。氣體主要由氫、氦組成。塵埃是直徑只有幾十萬分之一釐米的固態質點。平均密度爲1個粒子/立方厘米。既是形成恆星的材料,又是恆星演化的產物。
随便看
finite switching time
finite system
finite system of generators
finite table
finite target
Finite temoerature
finite temperature
finite-temperature magnetism
finite temperature nuclear matter
finite temporal variation
finite term
finite termination
finite theory
finite thickness
finite-thickness
finite thickness plate
finite-thickness type
finite thin sheet
finite thrust
finite-thrust trajectoryoptimization
finite time
finite-time
finite time average
finite time blow-up
Finite time blow-up
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更新时间:2026/8/21 13:47:53