将 千米 转换为 地球赤道半径
千米
定义: A kilometer (symbol: km) is a unit of length in the International System of Units (SI). One kilometer is equivalent to 0.6214 miles.
历史/来源: The prefix kilo- is a metric prefix indicating one thousand. One kilometer is therefore one thousand meters. The origin of the kilometer is linked to that of the meter, and its current definition as the distance traveled by light in 1/299 792 458 second. This definition is subject to change, but the relationship between the meter and the kilometer will remain constant.
当前使用: It is currently the official unit of measurement for expressing distances between geographical places on land in most of the world. However, there still remain a number of countries that primarily use the mile instead of the kilometer including the United States and the United Kingdom (UK). Unlike the United States, the UK has adopted the metric system; while the metric system is widely used in government, commerce, and industry, remnants of the imperial system can still be seen in the UK's use of miles in its road systems.
地球赤道半径
定义:
千米 转 地球赤道半径 转换表
| 千米 [km] | 地球赤道半径 [radius] |
|---|---|
| 0.01 km | 0.000002 radius |
| 0.10 km | 0.000016 radius |
| 1 km | 0.000157 radius |
| 2 km | 0.000314 radius |
| 3 km | 0.000470 radius |
| 5 km | 0.000784 radius |
| 10 km | 0.001568 radius |
| 20 km | 0.003136 radius |
| 50 km | 0.007839 radius |
| 100 km | 0.0157 radius |
| 1000 km | 0.1568 radius |
如何将 千米 转换为 地球赤道半径
1 km = 0.000157 radius
1 radius = 6378 km
示例
Convert 15 km to radius:
15 km = 15 × 0.000157 radius = 0.002352 radius
