请输入您要查询的字词:
单词
蟹状星云
释义
蟹状星云
Encyclopedia
理学
蟹状星云
释
Crab Nebula
蟹状星云
金牛座的一团无定形的膨胀气体云。星表中的编号为M1和NGC1952。标准历元J2000为赤经05h34m31.94s,赤纬+22°00′52.2″。角径为7′×4′,视亮度相当于9等星。
Astronomy
Crab Nebula
蟹状星云
随便看
simple hexagonal lattice
simple homotopy
simple homotopy equivalence
simple-homotopy-equivalent
simple homotopy type
simple hypothesis
simple ideal
simple ideas and complex ideas
simple infinite sequence
simple integral
simple interest
simple interest formula
simple interferometer
simple intersection point
simple interval
simple introduction
simple iteration
simple-iteration method
simple K-module
simple knot
simple knowledge organization system
simple labour
simple landfill
simple language
simple lattice
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。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/8/13 19:57:25