"质量集中分析" can be translated into English as "centralized quality analysis" or "focused quality analysis", depending on the specific context and intended emphasis.
Centralized quality analysis implies that the analysis is conducted in a centralized manner, possibly consolidating data or resources from various sources for a comprehensive evaluation.
Focused quality analysis emphasizes that the analysis is specifically directed or concentrated on quality aspects, with a particular focus or objective.
Both translations are valid, and the choice between them may depend on the specific context and the intended nuance of the message.