滞留时间是分室大小对于通过分室的流的比率，以时间单位表示，是能量或物质在分室中停留时间。
它们从小湖的几天到大湖的几百年不等；加州的太浩湖有700年的滞留时间。
They range from a few days for small lakes up to several hundred years for large ones; Lake Tahoe, in California, has a residence time of 700 years.
测定平均滞留时间的方法很多，实验条件不同，所采用的测定及计算方法也不同。
Many methods for the measurement of mean retention time are used. Different methods should be used under different experimental conditions.
除了隐形费用和未被告知原因的机舱滞留时间，还有一些其他事情航空公司永远不会对你说。
Besides the hidden fees and hours sat on an airplane without any clue as to why you're holding there are certain things that airlines will never tell you.
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