Lack of vitamin D is another factor to consider.
缺乏维生素D是另一个需要考虑的因素。
Set D as non square factor positive integer.
设D是无平方因子正整数。
In this paper two methods to elevate the return factor of the d.
串联电阻法与双线圈换接法是两种提高直流电磁开关返回系数的常用方法。
D a tendency toward high blood pressure may be a hereditary factor.
一种趋势认为高血压可能是家族遗传而来的。
D a tendency toward high blood pressure may be a hereditary factor.
一种趋势认为高血压可能是家族遗传而来的。
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