Stata回归结果分析

若解释变量均通过了显著性水平检验（但是不是同一个水平），可以根据相关系数的大小判断其作用的大小吗

are you talking about the marginal effects?
If so, you need to standardize the independent variables to be able to compare the coefficients directly.
An alternative way, compute the product (coefficient*standard deviation) for each independent variable and compare.