“X-ray sources”的概念、定义、习题解题方法及翻译-物理辞典

单词	X-ray sources
释义	X-ray sources Sources of X-radiation from outside the solar system. Some 100 sources within the Galaxy have been observed as objects that emit most of their energy in the X-ray region of the electromagnetic spectrum and only a relatively small proportion of their energy in the visible spectrum. Many of these X-ray sources appear to be members of a binary system, consisting of one optically visible star and one very compact object; it is thought that the latter is either a neutron star or (if very massive) a black hole. Owing to the absorption of X-rays by the earth's atmosphere these X-ray sources are only visible by X-ray telescopes carried by space probes and satellites, although some high-energy X-rays can penetrate the upper atmosphere and are detectable by X-ray telescopes mounted on balloons
随便看	Mohs' scale moiré pattern molar molar conductivity molar heat capacity molar latent heat molar volume mole mole fraction molecular beam molecular distillation molecular flow molecular formula molecular orbital molecular sieve molecular volume molecular weight molecule moment of a force moment of inertia momentum momentum space monochromatic radiation monochromator monoclinic

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。