呢篇文講經度。想搵第二個意思嘅話,請睇經 (搞清楚)

λ),又叫經度,係地理座標系統上分西嘅方法,本初子午線係0度,本初子午線東面(東半球)叫東經,本初子午線西面(西半球)叫西經。跟經度畫嘅線叫經線

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經係圖入面打豎嘅圈

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