Study on fretting performance of weld metals;
焊缝金属微动磨损性能研究
Research on mechanism of LY12CZ aluminum alloy fretting damage;
LY12CZ铝合金微动损伤机制的研究
An Application of Freting Maps to Palliative Treatments for Fretting Failure;
微动图在抗微动失效中的应用
The Effection and Mechanism of Micromovement on the Bone Healing;
微动对骨愈合的影响及作用机理
Evaluation of the Results of Auto-control Micro-motion Locking Intramedullary Nail on Fracture Healing;
自控微动带锁髓内钉内固定对骨折愈合影响的X线平片及微血管造影观察
In this paper,the conceptions of micro-motion and micro-Doppler are firstly introduced.
给出了微动和微多普勒一般定义,推导了任意运动规律的点目标的微多普勒计算公式,引入了微多普勒率的概念,提出了使用微多普勒估计微动目标运动参数的方法,给出了使用时频分布计算微多普勒的方法,并对典型微动目标的多普勒进行了仿真,证明理论分析的正确。
General model is derived for the echo signal of a target with micro-motion when radar transmits synthetic wide-band signal.
首先给出了微动目标合成宽带信号回波的一般模型,利用矩阵理论和离散傅里叶变换理论分析了微动目标合成距离像的一般数学原理和多普勒效应,证明了传统的最大二次相位误差准则不能精确地表征运动对距离像的影响,提出了新的距离像畸变度量指标,并给出了关于新准则的几个有用的结论,对步进频率信号进行了具体分析,最后给出了仿真计算,证明了理论分析的结论。
The micromotions of the finite element models with different thread pitches (0.
8mm螺距螺纹种植体微动最小,2。
Objective:To study the effects of micromotion which d epended on pendular changes in certain parameters, on the ingrowth and different iation of bone.
目的 :研究一定参数的微动对骨组织生长分化的影响。
The purpose of this study is to explore the micromotion characteristics of prosthesis in gait cycle under physiological load.
采用接触非线性有限元模型,分析在生理载荷下一个完整步态中人工髋关节的微动规律。
Study of fretting wear behavior of K417 nickel base superalloy;
K417镍基高温合金微动磨损行为的研究
Fretting wear behavior of CuS nanoparticles in urea grease was studied in fretting wear tester.
在微动磨损试验机上考察了含有硫化铜纳米粒子脲基脂的微动磨损性能。
The microstructure and microhardness of the joints were tested by means of optical microscope and microhardness tester,the fretting wear behavior of substrate and surfaced metals in room temperature were investigated on a PLINT fretting wear test rig.
用光学显微镜和显微硬度计对堆焊金属的显微组织和显微硬度进行了分析,用PLINT型微动磨损试验机考察了基体材料及堆焊层金属在室温条件下的微动磨损行为。