虽然这些评分系统提供关于很多功能结果方面有用的信息，但是他们在测量病人术后满意度方面能力是有限的。
Although these scoring systems provide useful information regarding many aspects of functional outcome, they are limited in their ability to measure satisfaction from the perspective of the patient.
它测量你肺活量，心脏，循环系统和肌肉的能力，被认为是最为精确的有氧体能测试。
It tests the capacity of your lungs, heart, circulatory system and muscles and is considered the most accurate gauge of aerobic fitness.
这些问题可能是由于以下各种因素造成的：人为因素、过程能力、测量系统的敏感性、正在变更顾客要求的、工作环境变更等等。
These problems may result from issues such as human factors, process capability, measurement sensitivity, changing customer requirements, changes in the work environment, etc.
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