The validity of legislation, which includes valid legislation and the force of the valid legislation, has its given objects, spatial extension and temporal duration.
立法效力是指被国家认可的立法活动在一定的空间和时间范围内对特定的对象所产生的作用力。
In the process of designing the geodatabase, dealing with the validity of spatial data is the key step.
在进行地理数据库设计过程中，对空间数据的有效性的处理成为设计地理数据库的关键一步。
This paper presents a new concept, color spatial distribution density, gives its computing method and proves the method's rationality and validity.
提出了颜色的空间分布密度的概念，给出了颜色的空间分布密度的算法，证明了算法的合理性和有效性。
This paper presents a new concept, color spatial distribution density, gives its computing method and proves the method's rationality and validity.
提出了颜色的空间分布密度的概念，给出了颜色的空间分布密度的算法，证明了算法的合理性和有效性。
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