原生水的化学性质随岩石的历史而有成分上的变化。
The chemistry of connate water can change in composition throughout the history of the rock.
目的比较7~15岁体重正常和肥胖儿童身体成分及其随年龄变化趋势，以便为肥胖儿童体重控制效果的评价提供基础数据。
Objective To compare body composition, characters of its changes with age of normal-weight children aged 7-15 years, and to provide evidence for the impact evaluation on children's weight control.
两个样品的第一个放热峰温度差别不大，但是第二个放热峰温度随成分的变化很大。
There isn't almost disparity between the first exothermic top temperature of two kind of samples, but the second exothermic top temperature changes bigly as component of samples changes.
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