Both geographic and projected coordinate systems include a definition of the assumed shape of the earth (a flattened sphere); this is called the geodetic datum.
地理和投影坐标系都包含对地球形状的假设(一个略扁的球体);这称为大地基准点。
Let's call a Flitter datum a flit.
让我们将一段Flitter数据称为一个flit。
Here is how it happens: First, you find that each Flazbar has a flizbam attached to it (and a flizbam is described by a datum).
这里,看一下它是如何发生的:首先,发现有一个flizbam附加在每个Flazbar后面(并且由数据来描述flizbam)。
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