It has been proved that normalized total gravity gradient method can be effectively used to ascertain the existence and exact location of single (or several) nonuniform density body.

重力归一化总梯度法用于研究单个或为数不多的密度不均匀体的分布和位置，已被证明是有效的。

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Investigators measured height, weight, and blood pressure, calculated body mass index, and obtained levels of serum total cholesterol and high-density lipoprotein cholesterol.

研究者测量了受试者身高、体重和血压，计算出体重指数，并测出血清总胆固醇和高密度脂蛋白蛋白结合胆固醇的水平。

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As well, the associations did not differ significantly by age group, body mass index, serum total or high-density lipoprotein cholesterol levels, or physical activity.

同样，不同的年龄、体重指数、血清总胆固醇和HDL结合胆固醇水平以及体力劳动并没有显著的相关性。

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