使用2 - d地图时保持精确度需要理解空间引用系统并合理使用。
Preserving accuracy when using a 2-d map requires understanding spatial reference systems and using them appropriately.
对于蛇来说，这种精确度对于保持体温至关重要。
That level of precision is critical to the snake for maintaining its body temperature.
在进行脉冲天线测量时，微波接收机必须与输入的射频脉冲保持同步，使接收机的响应最大，以减少误差、获得最好的测量精确度。
In order to reduce errors and obtain highest measurement precision, microwave receiver must be synchronized with input RF pulse to maximize receiver response.
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