As a subject matter expert in quality management, I can provide you with a comprehensive understanding of Six Sigma capability.

Six Sigma is a set of techniques and tools for process improvement. The term "Six Sigma" refers to the goal of these techniques, which is to find and eliminate causes of errors or defects in manufacturing and business processes, thereby improving quality. The capability of a process in the context of Six Sigma is a measure of how well a process is performing and its potential to produce outputs that meet customer requirements.

The capability is often assessed using statistical measures such as Cp (process capability index) and Cpk (process performance index). These indices compare the process variation to the specification limits set by the customer or the business. A process is considered capable if the natural variation of the process is less than the tolerance allowed by the specifications.

Here's the translation of the above explanation into Chinese:

作为质量管理领域的专家，我可以为您提供关于六西格玛能力的全面理解。

六西格玛是一套用于流程改进的技术和工具。"六西格玛"这个术语指的是这些技术的目标，即发现并消除制造和商业流程中的错误或缺陷原因，从而提高质量。在六西格玛的背景下，流程的能力是衡量流程执行情况以及其产生满足客户需求的输出的潜力的一个指标。

流程的能力通常使用Cp（流程能力指数）和Cpk（流程性能指数）等统计度量来评估。这些指数将流程变化与客户或业务设定的规格限制进行比较。如果流程的自然变化小于规格所允许的公差，则认为流程是有能力的。

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In process improvement efforts, the process capability index or process capability ratio is a statistical measure of process capability: the ability of a process to produce output within specification limits. The concept of process capability only holds meaning for processes that are in a state of statistical control.read more >>