half sphere 中文意思是什麼
half sphere
解釋
半球-
A polar projection of half or more of the celestial sphere on a chart equipped with an adjustable overlay to show the stars visible at a particular time and place
星座一覽圖天體球的一半或多半在平面圖上的極投影圖，這種圖具有可調節的遮蔽物以顯示在給定時刻和位置可見的恆星 -
Half way through the turn all that bright light from the ufo instantly switched off revealing a huge medium grey sphere made up of millions of clearly visible perfectly flawless identical pentagon shaped translucent / opaque crystals about 6 inches long with pointed ends and all spaced identically about 1 foot apart and not moving
轉向到一半時候所有來自不明飛行物明亮光立即地關上顯露出一種極大的淺灰色球體由數百萬根清楚可見完全毫無瑕疵同樣五邊形大約6英寸長而且同樣大約均等相隔開1英尺而且不移動具有尖端的半透明/不透明水晶製成。 -
This is significant because of the unique geometrical features of the arecibo telescope : whereas most radio dishes are parabolic in shape, the arecibo dish is a giant half - sphere dug into the ground
這非常重要，由於阿雷西博望遠鏡的獨特幾何結構：盡管絕大多數的射電望遠碟面都是拋物面型的，而阿雷西博的碟面是在地上挖出的一個巨大半球。
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