初潮早晚，同居信在城市和农村也有一定关系。
Sooner or later menarche, cohabitation letters in urban and rural areas there is a certain relationship.
部分地区如宜宾、荣昌等地震活动非常活跃，与当地采气注水也有一定关系。
Meanwhile the seismic activities in some areas such as Yibing, Rongchang counties may be caused by the nature gas drilling and the injection of water.
多元逐步回归分析表明，血清LH及血浆睾酮水平的改变与接触者的工龄明显相关，其次与吸烟也有一定关系。
Stepwise multiple regressive analyses indicated that there were notable correlations between serum LH, plasma testosterone and exposure, duration of exposure (P<0.05) .
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