在语言测试理论的基础上，对全国外语翻译证书考试的现状做了一番考察。
Based on language testing theory, the author scrutinizes the status quo of current NAETI.
原理是测试方法的理论基础和科学依据。
Principles are the theoretical base and scientific foundation of psychological testing methodology.
给出了雷达天线的测试理论基础，并分析了电测系统原理。
The article also provides the theoretic basis of measurement, and analyzes the theory of the electrical measurement system.
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