Face angle distance 顶锥角距
Spectral Angle Distance 光谱角距离
measuringfor hydraulic engineeringHorizontal Angle Distance 水利施工测量
distance angle 距离角
distance by vertical angle 垂直角距离
angle 1 angle 2 distance 角1角2距离
Calculating this angle would allow astronomers to measure what was then the ultimate goal: the distance of the Earth from the Sun.
计算这个角度可以让天文学家测量地球到太阳的距离,这是当时的终极目标。
The earth's not always the same distance from the sun, and it's not always tilting toward the sun at the same angle.
地球到太阳的距离并不总是相同的,地球也并不总是以相同的角度倾斜向太阳。
As Venus was closer to the Earth, its parallax angle would be larger, and Halley worked out that by using Venus it would be possible to measure the Suns distance to 1 part in 500.
由于金星离地球更近,所以它的视差角会更大。哈雷计算出,利用金星可以测量出太阳与地球之间的距离,误差为五百分之一。
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