There's a strong correlation between the burrowing lifestyle and very small limbs or the complete loss of limbs.

从穴居生活到非常小的四肢，再到完全丧失四肢，这之间的关联非常强。

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Objective:To study the correlation between the degree of rheumatoid arthritis(RA) and periodontal bone loss.

目的：揭示类风湿性关节炎患者关节炎严重程度与牙周骨丧失程度的相关性。

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Results The average equivalent sound level and the detectable rate of workers hearing loss were exponential positive correlation, the coefficient of correlation r was 0 812 45.

结果听损检出率随平均等效声级的增加而呈明显的增加趋势，平均等效声级与噪声作业人员的听损检出率呈密切的指数正相关关系（相关系数r为0 812 45 ）。

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