Aging is also a significant trend in China’s future demographic structure.
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The sentences
A value of b > 0 indicates an increasing trend of x with time, and b < 0 indicates a decreasing trend of x with time.
Aging is also a significant trend in China’s future demographic structure.
A value of b > 0 indicates an increasing trend of x with time, and b < 0 indicates a decreasing trend of x with time.