Least squares are a collective correction to a set of data with errors. ( )
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The approximate equality equations can be solved by using elimination method and substitution method. ( )
The more careful you want to understand objective things, the more measurement data you need. ( )
By the way the dominoes are made by the British physicist Whitehead, the energy the dominoes creates will tend to infinity, which can destroy anything. ( )
The speed limit is usually imposed on highways because a can is so fast that it is easy for people in the car to feel afraid. ( )