The patients were divided to two groups at random for arch expansion with removable lingual arch plus auxiliary spring and with Quad-helix, respectively, and the effect of arch expansion was compared between the two groups. 其中上颌扩弓者9例,下颌扩弓者8例,随机分为两组,分别采用活动舌弓+再曲簧和四眼簧进行扩弓,比较两组的扩弓效果。
Natural Frequency in the Automobile Suspensio with Main and Auxiliary Spring 采用主付钢板弹簧的汽车悬架偏频
With auxiliary chamber, how the pressure influences on the stiffness and damping of the air-spring? 在带附加空气室的条件下,空气压力对空气弹簧刚度和阻尼有什么影响?
The wearing mechanism, wear-resisting design of automobile composite ends of auxiliary spring, the selection, hardness optimization and thickness calculation of wear-resisting material were discussed here. 本文讨论了复合材料汽车副簧两端部的磨损机理,防磨设计,耐磨材料的选择及硬度的优化和厚度的计算式。
The excellent wear-resisting properties of composite auxiliary spring with wear-resisting structure were proved by experiments. 实验证明具有防磨结构的复合材料副簧两端耐磨性能良好。
To solve the problem, using the auxiliary teaching of spring and pulling have a perfect effect. 为解除这些问题,采用弹拉式辅助教学方法,收到较好的训练效果。
In this paper, the dynamical model of air spring with auxiliary chamber is studied, and the mathematical model of air spring in car suspension is established. 提出了带有附加气室的空气弹簧的力学模型,建立了空气弹簧在汽车悬架中的数学模型。
Research of management decision auxiliary system for disc spring products 碟簧产品经营决策辅助系统的研究
Objective Observe the clinical effect of removable lingual arch plus auxiliary spring for convenient dental ( especially mandibular) arch expansion. 目的观察活动舌弓+再曲簧临床扩弓效果,寻找一种简便、有效,尤其对下颌牙弓更理想的扩弓方法。