Standard method for direct reading spectromertric analysis of aluminum and its alloys 铝及铝合金光电测光法发射光谱分析方法
3.
The photometric observation of the asteroids is an important way to study their physical parameters . the rotation and shape parameters of the asteroids derived from the lightcurves are necessary data for the evolution studies of the solar system and theirselves 光电测光观测是研究小行星物理参数的主要手段之一,由小行星自转光变曲线推断出的小行星的形状和自转参数是以上两方面研究工作所必需的数据。