For the vast number of old and new users to provide more high-quality, high technological content of products.
将为广大新老用户提供更多的高质量、高技术含量的产品。
When WC content is more then 50%, spray-fusing technological property becomes worse, hardness of sprayed coating and low-stress abrasive particle wear resistance are weaken.
当w（WC）大于50%时，WC的加入使喷熔工艺性能变得极差，喷熔层的硬度和耐低应力磨粒磨损性能降低。
With the rapid development of science and technology, scientific and technological education begins to play a more and more important part in the teaching content today.
在科学技术飞速发展的今天，科技教育在教学内容中占有的地位越来越重要。
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