在一个大的地区内可能会存在某些未知的共同误差源，因此为建立好的参考系，观测仪器的地理分布以尽可能均匀为好。
Some common error sources probably exist in a large region. Instruments should be distributed as uniformly as possibly in order to establish a stable reference system.
共同社没有提供误差幅度，但是，该规模的投票通常有5个百分点的抽样误差。
Kyodo did not give a margin of error, but a poll of that size would normally have a five percentage point sampling error.
指出扫描加工误差并不是单一原因引起的，而是多种原因共同作用的结果。
The errors were aroused not only by single reason but also by all reasons together.
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