草图应该是最终绘画的某种演练。The sketch should be a kind of rehearsal for the eventual painting.凡·高对现代绘画的发展有着重大影响。Van Gogh had a major influence on the development of modern painting.通常，绘画中暖色调为近感色，而冷色调为远感色。Generally, warm colours adva...
stellar photometry星体光度学This formation, called an accretion disk, may be very important in some stellar birth sequences.这种构成物即所谓吸积盘, 它在恒星诞生的某些阶段可能是非常重要的.If the stellar spectrum is known, the albedo of the dust can be obta...