While there are a number of different ways that astronomers infer the existence of exoplanets, NASA's Kepler mission USES what's known as the transit method.
天文学家推断系外行星存在的手段有好几种，美国宇航局的开普勒项目使用的是凌日法。
Based on the principle of period transit method, semi-period transit method of collimation is proposed to improve the north-seeking speed and the automatic degree.
由陀螺仪寻北中天法的基本原理出发，提出了一种固定照准部的初寻北半周期中天法。
Integral lifting main body of a shield machine is a quick and simple shield machine transit method through subway stations, and can save subway station construction costs.
整体吊装盾构机主体是一种快速简便的盾构机转场通过地铁车站的方法，节约了地铁车站建设成本。
Integral lifting main body of a shield machine is a quick and simple shield machine transit method through subway stations, and can save subway station construction costs.
整体吊装盾构机主体是一种快速简便的盾构机转场通过地铁车站的方法，节约了地铁车站建设成本。
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