based on the demands of two limit states, the design control equations of cross section for prestressed concrete beam are derived and the direct design method is presented.
根据两类极限状态的基本要求,建立了预应力混凝土梁截面设计的控制方程,提出了直接设计方法。
secondly, according to design and manufacture characteristic of the micro-gear, the direct design method called「deviation function」is proposed.
第二,根据微型齿轮传动设计与制造的特点,提出了一种设计微型齿轮轮齿齿廓曲线的方法,即偏差函数法设计齿轮齿廓。
this paper put forword a direct design method of the digital controller on performance specifications of frequency domain.
根据两类极限状态的基本要求,建立了预应力混凝土梁截面设计的控制方程,提出了直接设计方法。