性交试验是怎么回事?What's with the fucking test?

性交试验是怎么回事，有这个检查吗?什么时候做呢?What about the fucking test? Is there a test? When will you do it?

陈凤林教授指出：这个性交试验叫交媾实验，主要针对不明原因不孕的患者，是为观察精子在阴道内和宫颈口的数量、活动力，以及是否有性功能障碍或宫颈粘液与精子有不相容性而导致的不孕所做的一种检查。又称房事后试验。

Professor Chenfenglin pointed out: This sexual intercourse experiment is called coitus experiment. It is mainly aimed at patients who are infertile for unknown reasons. It is to observe the number and activity of sperm in the vagina and cervix. And whether there is sexual dysfunction or cervical mucus is incompatible with sperm caused by an infertility test. Also known as the house post-test.