所以研究和制造大型振动筛，提升设计水平，提高振动筛的运行可靠性已成为一项重要的研究课题。
Thus it is an important research subject to design large vibrating screenings, raise the design level and improve working reliability and service life of vibrating screenings.
所以研究和制造大型振动筛，提升设计水平，提高振动筛的运行可靠性已成为一项重要的研究课题。
Thus it is an important research subject to design large vibrating screenings, raise the design level and improve working reliability and service life of vibrating screenings.
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