Overall quality management is the quintessence of ISO9000.

全面质量管理是ISO 9000质量管理的精髓。

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Overall quality management is an advanced managing concept and method.

全面质量管理是一种先进的管理思想和方法。

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ISO9000 is the most advanced standard of overall quality management in the world, applicable to all walks of life.

ISO 9000是当今世界上最先进的全面质量管理标准，它适用于各行各业。

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It is not just enough to improve the quality of the teaching standards, as was done in the past, it is also important to improve the overall quality of school leadership and management to allow teachers to become more effective in their roles.

UNESCO: Professional Standards for School Principals: Tuvalu Initial Workshop | United Nations Educational, Scientific and Cultural Organization