...境 企业内部环境 二、外部环境分析方法 一、通过收集相关资讯，运用PEST方法，找出影响企业的外部关键要素（External Key Factor, EKF） 二、对 EKF的变化进行预测 1.定量方法：经济模型、回归分析、趋势线等 2.
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概述了化工实验室质量控制的关键要素，包括内部质量控制和外部质量控制，并对内部质量控制进行了详细分析。
The critical points of quality control in the chemical laboratory were summarized in the paper, including internal and external quality control, and internal one was analysed in detail.
大学核心竞争力要素有内部要素和外部要素，是关键的、强势的要素，具有价值性、独特性。
The core competence of university is composed by inner and outer elements, which is essential and valuable and unique.
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