This hypoxia also causes the parasympathetic nerve fibers to die off.

这种缺氧还会导致副交感神经纤维死亡。

In both cases, the parasympathetic nerve fibers in the cavernosal spaces release acetylcholine from their nerve endings.

在这两种情况下，副交感神经纤维在海绵体间隙通过神经末梢释放乙酰胆碱。

Damaged parasympathetic nerve fibers can't release acetylcholine, so there's less nitric oxide synthase activation, and less nitric oxide is produced.

受损的副交感神经纤维不能释放乙酰胆碱，因此被激活的一氧化氮合酶较少，产生的一氧化氮也较少。

But - those same airways also have muscarinic receptors which can get stimulated by parasympathetic nerves, causing a decrease in the diameter of airways.

但是这些气道也有M胆碱受体，副交感神经也可以激动它们，使气道收缩。

Sensors inside the washing machine will measure the state of sympathetic and parasympathetic nerves, and the built-in AI will use the collected data to create the most comfortable atmosphere possible.

洗澡机内的传感器将会感知用户的交感神经和副交感神经状态，内置智能系统会利用收集的数据来营造尽可能舒适的氛围。