The maximum amplitude, stability and amplitude jump of main resonance describe the primary characters of a drive shaft.
传动轴主共振的最大振幅、稳定性、振幅突变性是其主要特性。
The strong trade atmosphere, good commercial effect and large exhibition returns are the primary characters of the Northeast Hardware exhibition leading the other industry exhibitions.
洽谈交易气氛浓，商业效果好，展商收益大是东北五金展领先于其他行业展会的首要特色。
The strong trade atmosphere, good commercial effect and large exhibition returns are the primary characters of the Northeast Hardware exhibition leading the other industry exhibitions.
洽谈交易气氛浓，商业效果好，展商收益大是东北五金展领先于其他行业展会的首要特色。
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