求翻译：一是男性精液参数随着禁欲时间的延长而出现周期性的变化，即每一次排精后精子参数的变化过程和时间长度是相同的；是什么意思？

Is the male semen as you extend the abstinence time cyclical changes, that is, each row after finishing changes of sperm parameter and the length of time the process is the same;