The axial fixed position preload is applied to middle ring of the shaft, the axial rigidity of the angular contact ball bearing is obtained by the impulse excitation tests.
对转台中环主轴施加轴向定位预紧力，通过脉冲激励法试验得到角接触球轴承的轴向刚度，试验结果与理论结果吻合较好，为转台研制中各轴系预紧量的控制提供了理论和实验依据。
A set of experimental measurement system to the chang process for impulse TIG welding pool width has been established based on contact measurement in front of weld by visual computers.
建立了一套以计算机视觉焊缝正面检测为基础的脉冲tig焊熔池宽度变化过程的实验检测系统。
Due to maglev railway adopts traveling crane technique of non-contact, passengers don't become aware of portrait impulse and shake.
由于高速磁悬浮铁路采用了非接触式的行车技术，舒适性将得到很好的改善。
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