建立了U形无加强波纹管结构分析的有限元分析模型，采用ANSYS有限元软件对其在不同平面失稳工况下的应力响应进行了计算。
The finite element analysis model to the U shape bellows is presented and calculated by the ANSYS program under diverse loads for in plane instability.
在网络为无耗和半均匀损耗的情况下，本文讨论了宽带匹配网络等波纹增益函数的确定方法。
In this paper, the approaches for obtaining the equiripple gain function of broadband matching networks for lossless and semi-uniform lossy networks are discussed.
介绍了用智能采样、模糊控制来实现弹簧垫圈定量自动包装自适应少节拍、无波纹控制的方法。
The method of using Intelligent Sampling Unit and fuzzy control to achieve the adaptive unripple control in spring washer packing, is described.
当控制临近结束偏差较小时，采用无波纹最小拍控制，实现限时精定位，从而达到快速、精确定位的目的。
The precise control near the end of control where minor deviations are observed is realized by ripple—free minimum beat control to bring about a rapid, fine timing effect.
空气冷却器采用无翅片椭圆不锈钢波纹管管束替代传统的翅片管管束，是空气冷却器设计制造的技术革新。
The air cooler is designed of nullity fin oval stainless steel bellows tube bank replacing conventional fin tube bank. It is a technological innovation designing and manufacturing of The air cooler.
空气冷却器采用无翅片椭圆不锈钢波纹管管束替代传统的翅片管管束，是空气冷却器设计制造的技术革新。
The air cooler is designed of nullity fin oval stainless steel bellows tube bank replacing conventional fin tube bank. It is a technological innovation designing and manufacturing of The air cooler.
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