针对产品并行设计过程特点，提出一种分层递阶(三层七阶段)的产品可制造性评价策略。
A hierarchy evaluation method of three levels and seven stages of product manufacturability is presented based on the process of product concurrent design.
得到的结论是：对于叶片的前七阶振动，通常的叶片固支状态对叶片自振频率计算值几乎没有影响。
The conclusion shows that the calculated results of blade intrinsic vibration frequencies bear no relation to the common fix states for the first seven-order blade vibration.
在此基础上，对车架的动态特性进行了分析，得到EQ 6590ks1车架在动态特性下的前七阶固有频率和相应的谐响应特性。
Based on this, dynamic property of EQ6590KS1 coach body frame was studied, the seven native frequency and its harmonic response property are gained.
在第七章里，讨论向量优化问题的二阶导数的稳定性。
In Chapter 7, we study stability of second-order derivatives in vector optimization problems.
在第七章里，讨论向量优化问题的二阶导数的稳定性。
In Chapter 7, we study stability of second-order derivatives in vector optimization problems.
应用推荐