nebula造句

• The spiral nebulae are impressive objects .
  旋涡星云是迷人的天体。
• This suggest that the nebulas are aggregates of stars .
  这说明星云是恒星的聚集体。
• A nebula is really a discrete mass of innumerous stars .
  一团星云实际上是无数星体不连续的集合体。
• The element hydrogen comprises 90% of the matter in gaseous nebulae .
  元素氢占气体星云物质的90。
• The element hydrogen comprises 90% of the matter in gaseous nebulae .
  元素氢占气体星云物质的百分之九十。
• Galactic nebulas are masses of diffuse material within our galaxy .
  银河星云是我们星系中的一团团弥散物。
• We have identified the crab nebula as the debris of this explosion .
  我们已证明蟹状星云就是这次爆炸的遗迹。
• The investigation of dark nebulas has been facilitated by a new discovery .
  对暗星云的研究被一种新发现所推进。
• The trifid nebula itself represents the final phase of star formation .
  三叶星云本身代表着恒星形成的最后阶段。
• Many objections can be raised to this picture of planetary nebula formation .
  形成行星状星云的这一图像可能会引起许多异议。
• Some nebulae appear to be completely engulfed by exceedingly large molecular clouds .
  有些气体星云似乎被极其巨大的分子云完全包围。
• Good spectra of the spiral nebulas are difficult to obtain because of their extreme faintness .
  旋涡星云因为非常暗，难以得到它们的清晰的光谱。
• The general shape of the average nebula is that of a thin circular disk somewhat thick in the center .
  星云最常见的形状是中间较厚边缘较薄的圆盘。
• Precise thermodynamic equilibrium may never be achieved in a microscopic realm within gaseous nebulae .
  精确的热动平衡永远不会在气体星云的一个微观范围内达到。
• Planetary nebulae are a type of isolated gaseous nebulae possessing a fair degree of bilateral symmetry .
  行星状星云是一类孤立的气体星云，具有相当程度的双侧对称性。
• These sources are generally viewed in projection against radio nebulae representing the remnants of supernova outbursts .
  这类源一般都投影在超星爆发残骸的射电星云上。
• Such tumultuous, often visually spectacular, interstellar regions surrounding youthful stars are known as gaseous nebulae .
  这种环绕着年轻星的动荡且常常是壮观的星际区域，叫做气体星云。
• The great nebula is a cloud of glowing gas centered on four hot, blue stars located about 1, 500 light-years from the earth .
  这个大星云是以离地球大约1500光年的四颗很热的蓝星为中心的发光气体云。
• The temperature of the nebula in some places may never have risen high enough to evaporate pre-existing micron-sized interstellar grains .
  星云中某些地方的温度可能从未升高到足以使原有的微米级大小的星际尘埃变成气体。
• These calculations can be compared with the chemical analyses of meteorites in an attempt to ascertain the conditions in the nebula at the time of their formations .
  这些计算可与陨星的化学分析相比较，从而推断在它们形成时星云中的条件。