1. quality assurance; QA
Wikipedia definition
2. Quality assuranceQuality assurance (QA) refers to the planned and systematic activities implemented in a quality system so that quality requirements for a product or service will be fulfilled. It is the systematic measurement, comparison with a standard, monitoring of processes and an associated feedback loop that confers error prevention. This can be contrasted with Quality "Control". which is focused on process outputs.
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Read “品質保証” on Japanese Wikipedia
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