l德雷克方程是天文学家法兰克·德雷克提出的一个计算方法，用来测算银河系中可能存在的文明社会的数量——计算的结果，竟是数以百万计！
L the Drake Equation was proposed by astronomer Frank Drake to work out how mane civilizations there could be in our galaxy - and the figure is millions!
l依据上面所说的计算方法，天文学家可以精确地测算出宇宙中行星、恒星和星系的运行规律。
This calculation allows astronomers to predict precisely the movement of every planet, star and galaxy in Universe.
本文分析了社会总需求总量测算的困难，并给出了社会总供需均衡分析的计算方法与公式。
This paper analyzes the difficulty in calculation of inference of the social total demands, and provides a calculation method and formula about the balance analysis of the social supplies and demands.
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