The instrument which is employed to directly measure the tri-stimulus coordinates of a color is known as a colorimeter . 用來直接測定顏色三刺激值座標(biāo)的儀器叫做色度計。
An input device that provides coordinates of a position . example : a mouse , a tablet 提供位置座標(biāo)的一種輸入設(shè)備。例如鼠標(biāo)器、圖形輸入板。
We will talk more about the celestial sphere and how to tell the positions of the stars in the sky . we will also introduce the constellations and the star atlas 在這一章,我們會探討天球及天球座標(biāo)的種種,然后再介紹星座及星圖。
Declination of a planet is his distance from the equator , and as he declines from thence either northward or southward , so is his declination nominated either north or south 星體以赤道為座標(biāo)的緯度。同樣地,觀測星體落在赤道南邊或北邊,以及如何運行。