In order to get low surface roughness and high material remove rate, basic research on the optimization of process parameters in creep feed ultrasonic grinding engineering ceramics was conducted.
为了在加工中获得良好的表面质量和大的材料去除率，本文开展了蠕动进给超声磨削工程陶瓷参数优化的基础研究。
This paper discuss the project office work material importance from the highway engineering construction process and the procedure aspect.
文章从公路工程施工过程及程序方面论述了工程内业资料的重要性。
Concrete is a typical heterogeneous quasi-brittle material used in engineering, and its fracture process is very complex.
混凝土是一种典型的非均匀准脆性材料，其断裂过程是非常复杂的。
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