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12 godz. temu · Lunar distance (LD), the distance from the centre of Earth to the centre of the Moon, is a unit of measure in astronomy. The lunar distance is approximately 384,400 km (238,900 mi), or 1.28 light-seconds; this is roughly 30 times Earth's diameter. A little less than 400 lunar distances make up an astronomical unit. Siriometer
12 godz. temu · 其计算公式如下：. \ [ D_ {react} = S \times \frac {5280} {3600} \times \frac {T} {1000} \] 其中：. \ (T\) 是反应时间，以毫秒 (ms) 为单位。. 例如，如果您的行驶速度为 55 mph，反应时间为 250 ms，则反应距离可以计算如下：. \ [ D_ {react} = 55 \times \frac {5280} {3600} \times \frac {250} {1000 ...
