mass energy density 中文意思是什麼
mass energy density
解釋
質量-能量密度-
The isospin effect and k production in intermediate and high energy heavy ion collisions ( hics ) are hot topics in the nuclear physics. based on the isospin - dependent quantum molecular dyanmics ( iqmd ) model and self - consistent relativistic boltzmann - uehling - uhlenbeck ( rbuu ) model, we have studied them and obtained some interesting results. as for the study of isospin in intermediate energy hics, we ' ve investigated how both stength ( q ) and density dependence of symmetry potential ( sp ) affect many measurable observables, such as the yield, phase - space, and isospin distributions of fragments, as well as the correlations between intermediate - mass - fragment ( imf ) multiplicity n and charged - particle multiplicity n, light - charged - particle ( lcp ) multiplicity n, and neutron multiplicity n,
在中能重離子碰撞的同位旋研究方面，分別研究了對稱勢的強度（ c _ s ）和其密度依賴形式對中能重離子核反應各類碎片產物產額、相空間、及其同位旋的分佈，中等質量碎片多重數（ n _ （ imf ） ）與帶電粒子多重數（ n _ c ） 、輕帶電粒子多重數（ n _ k ） 、中子多重數（ n _ n ）的關聯等多種實驗觀測量的影響，以獲取對稱勢中該兩方面的信息，尤其著重於研究如何分別獲取有關該兩方面的信息的途徑。 -
How the universe evolves is affected by three factors, namely the mean density of mass - energy, the space - time curvature and a mysterious factor, the cosmological constant
宇宙尺度的變化受三個因素影響：宇宙中質量-能量的平均密度宇宙的時空曲率與及一個神秘因素宇宙常數。 -
The future of the universe is mainly determined by the mean density of mass - energy and the space - time curvature, while cosmological constant does not carry any weight among popular cosmological theories
現在流行的宇宙論都不考慮宇宙常數，宇宙的未來完全由質量能量的平均密度及宇宙的時空曲率來決定。 -
The average range of nonthermal radiation particles is direct proportion to the energy extent of nonthermal radiation particle, but also inverse proportion to the density of stellar gas, however, to the stationary black hole with mass multipole moment and nonstationary black hole, the average range of their nonthermal radiation particle still has something to do with direction, which are the new results reported firstly
非熱輻射粒子的平均射程與非熱輻射粒子的能量范圍成正比、與星際氣體的密度成反比；對動態黑洞和一類具有質量多極矩的穩態黑洞而言，非熱輻射粒子的平均射程還與方向有關。這些都是首次報道的新結果。 -
Because of its great mass, both the core temperature and density are higher than that of a solar mass star. the nuclear reaction rate is also higher and it produces more energy per second. the star is of spectral type o, b or a
由於質量更大，恆星核心的密度及溫度亦必然比小質量恆星高，所以熱核反應會以更快速度進行，產生出更多的熱能，恆星會更加光亮，這些恆星通常為o b或a型恆星。 -
On the other hand, if the mean density of mass - energy is too low, the universe will keep on expanding forever, resulting in an open universe
相反，若質量能量的平均密度太低的話，宇宙會無休止地膨脹下去，成為一個開放的宇宙。
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