Keep learning. Excel in your career. Choose from more than 200 courses in seven different categories, taught by experts in the chemistry community, online and in person.

There are several ways to manage mucus in the lungs, including natural and at-home options like inhaling steam. Controlled coughing can be used to clear the lungs, as can chest percussion. Airway ...

从毫伏到温度：测量冷端温度，换算为对应毫伏值，与热电偶的毫伏值相加，换算出温度； 从温度到毫伏：测量出实际温度与冷端温度，分别换算为毫伏值，相减後得出毫伏值，即得温度。 在生产中由于被测对象不同，环境条件不同，测量要求不同，和热电阻 ...