Systerms : system terms : 光速

A (41) | B (23) | C (62) | D (45) | E (33) | F (34) | G (18) | H (16) | I (28) | J (2) | K (5) | L (14) | M (29) | N (17) | O (10) | P (62) | Q (10) | R (41) | S (74) | T (31) | U (12) | V (12) | W (8) | X (1) | Y (2) | Z (2)

光速是指光在真空或者透明介质中传播的速度，‌真空中光速通常按每秒 30 万公里计算‌，这是物理学中的一个基本常数。‌‌

tags

数学

数学系统

Everything is a system, and every system contains systerms.

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