行政行为概念是大陆法系行政法学的核心范畴之一。
The concept of administrative act is one of the core concepts in administrative law science in civil law system countries.
行政决定的效力是大陆法系行政法上的重大理论问题，在各国行政法学研究中居于核心地位。
The validity form of administrative decision is an important theory topic in the administrative law of continental law system, and it is also the core of administrative law research.
比例原则是发达国家，特别是大陆法系国家和地区行政法领域的一项重要原则。
The principle of proportionality is an important principle in administrative law of the developed countries, especially of the nations and districts of continental law system.
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