应用GM(1,1)模型，对十堰市城区人口的死亡率建立灰色预测模型。

Through the application of model GM (1, 1), gray prediction model is established about population death rate of urban area in Shiyan.

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它们的婴儿出生死亡率较高、人口平均寿命较短，因为它们没有足够的资金用以对疾病进行预防和控制，也无法为病人提供适当治疗。

Infant mortality is higher and life spans shorter because they don't have enough to immunize against diseases, prevent them from spreading, and cure the sick.

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通过人口监测系统估算的儿童死亡率比通过常规例行调查所确定的国家估算数据约低了30%左右。

Child mortality rates estimated with the DSS were approximately 30% lower than those from national estimates as determined by routine surveys.

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