对DDS基本原理进行了简要介绍，利用信号分析的方法对DDS理想输出进行频谱分析。
The fundamental principle of direct digital synthesis (DDS) is introduced in this paper. Based on signal analysis, the ideal output spectrum characteristic of DDS is analyzed briefly.
学校人本管理是人本原理在学校管理中的运用，是当代素质教育应当追求的一种理想的学校管理模式。
School humanistic-administration is the application of humanistic-administration, an ideal school administrative mode that quality-education should go in for.
学校人本管理是人本原理在学校管理中的运用，是当代素质教育应当追求的一种理想的学校管理模式。
School humanistic-administration is the application of humanistic-administration, an ideal school administrative mode that quality-education should follow.
方法TOPSIS方法是多目标决策分析中一种常用的有效方法，其基本原理是通过计算评价对象与理想化目标的距离来进行优劣排序。
Methods Using multi-object TOPSIS methods, through calculating distance between evaluation objects and idealization objects, this article has a good and bad sequencing.
方法TOPSIS方法是多目标决策分析中一种常用的有效方法，其基本原理是通过计算评价对象与理想化目标的距离来进行优劣排序。
Methods Using multi-object TOPSIS methods, through calculating distance between evaluation objects and idealization objects, this article has a good and bad sequencing.
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