本文结合黑龙江省科技厅的攻关项目，建立球磨法制备超细石英粉体的工艺参数模型并进行优化。

This article is based on the item of science and technology office of heilongjiang province, and a process parameters model is built and optimized.

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宝马全新1系列，土豪亲自到了德国来测试性能，抛开传统参数不谈，就让土豪带领大家了解这款车子内在的科技含量吧！

In today's video Linus and Nick VB travel all the way to Germany to take the all new BMW 1 Series out for a drive and check out the cool technology inside it!

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[2]施善玲。液压支架液压缸参数化设计[d]。西安：西安科技大学，2014。

SHI Shanling. Parametric Design of Hydraulic Support Hydraulic Cylinder [d]. Xi 'an: Xi 'an University of Science and Technology, 2014.

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