虛球圓 的英文怎麼說
中文拼音 [xūqiúyuán]
虛球圓
英文
imaginary circle at infinity-
Curve traced on an imaginary sphere with the source at its center and joining all the points corresponding to those directions in which the luminous intensity is the same, or a plane projection of this curve
在一個以光源為圓心的虛擬的球面上,將光源射向球體上光強相同的各方向的點用線連接起來,就成為等光強曲線。The equator is an imaginary circle around the earth
赤道是地球的一個虛擬的圓圈。
分享友人