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): 517-521. DAI Zihang. Study on distribution laws of land slide-thrust and resistance of sliding mass acting on antislide piles[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(4): 517-521......
plane as the resonator. The piezo- electrodes located on the bottom of the shell and the inertial proof mass-the vibrating ring located on the top of the shell are not in the same plane. So, there may... local stiffness and mass distribution of the resonators. Thus, the frequency split can be reduced to a small value. After the mechanical balancing procedure the frequency split was reduced to sub......
: In order to solve the problem of mass data acquisition and transmission of complicated equipment condition monitoring, a method of adaptive compressed sensing of machinery vibration based on lifting......
investigated. The results show that the distribution of reinforcement in the composite with 10% (mass fraction) quasi-crystal master alloy is significantly uniform. The wear coefficient of the AZ31 alloy......
; Chemical composition of ZQAl10-4-4 alloy (mass fraction, %) 为研究镍铝青铜固溶时效组织的变化规律,将试样在900 ℃和950 ℃下保温2 h后水冷,并将950 ℃固溶2 h后的试样进行时效处理,时效温度分别为300,420,450,480,510,600和700 ℃,保温时间均为2 h,空冷.热处理试验在S62-3-10型电阻炉中进行,采用......
The material used in the tests was NAB alloy, ZCuAl9Fe4Ni4Mn2, and its chemical composition (mass fraction) is: 80.30% Cu, 9.28% Al, 4.45% Fe, 4.24% Ni, 1.42% Mn, 0.0076% Zn, 0.011% Sn and 0.022% Pb......
. 2 Surface SEM images of sintered Nd-Fe-B magnets eroded in different acid solutions for 30 min 表2 经3种酸溶液腐蚀后钕铁硼永磁合金的元素质量分数 Table 2 Element mass fraction of sintered Nd-Fe-B magnets......
of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; 4. Guangzhou Mass Transit Engineering Consultant Co., Ltd., Guangzhou 510010......
据体;设某集函数m:→[0,1]满足m(Φ)=0,且,则称函数m为识别框架上的1个基本概率分布函数,又称Mass函数;m(A)为命题A的基本信度;Bel称为识别框架上的信度函数;Bel(A)称为命题A的信度. 故在全部证据体作用下A的基本信度m(A)为 (1) 其中: (2) 式中:k为......
间的摩擦力增大,同时,第2块隔板之后的结构对该隔板产生了1个与其运动方向相反的反作用力,因此,第2块隔板在9.5 ms出现了与运动方向相反的加速度峰值; 图5 串行铝蜂窝系统中小车和各隔板的相对位移,速度和加速度曲线 Fig. 5 Displacement, velocity and acceleration curve of mass blocks......