“Ring Nebula”的概念、定义、翻译、参考文献-科学参考

单词	Ring Nebula
释义	Ring Nebula Encyclopedia 理学行星状星云释 Ring Nebula环状星云位于天琴座的典型的行星状星云。星表中的编号为M57和NGC6720。位于北天区，距离地球2300光年，目视星等8.8，半径约1.3光年。由于面向地球呈环状结构，并处于明亮的织女星以南，长期以来备受关注。 Astronomy Ring Nebula指环星云
随便看	dynamics of a particle dynamics of a rigid body dynamics of a system of particles dynamics of body with variable mass dynamics of earthquake sources dynamics of fractional order systems dynamics of groundwater dynamics of holonomic systems dynamics of human behavior dynamics of machines dynamics of multi-rigid-body systems dynamics of networked systems dynamics of neural cognitive functions dynamics of neural systems (neurodynamics) dynamics of nonholonomic systems dynamics of nonsmooth systems dynamics of orbits dynamics of petroleum migration and accumulation dynamics of phase transition dynamics of rigid body dynamics of rotation of a rigid body with a fixed point dynamics of rotor systems dynamics of school class dynamics of sorption dynamics of stellar systems

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。