通过大量实验研究和生产实践，发现它不仅可以达到对矿物进行超细粉碎的目的，而且还兼有提纯矿物的作用。
Experimental investigation and production practice show that the pulverisers can not only achieve extra-fine crushing of minerals, but also purify minerals.
研究生物进化过程的最后的方法是通过大量的实验。
says Jason Crusan, chief technologist for space operations at NASA headquarters in Washington, D.C. Performing a large number of experiments is best for studying biological processes.
通过大量实验，研究了该系统的性能。在多种回流和旋流流场测量中进行了应用。
The characteristics of this system is studied by experimental investigation, and find its use in various recirculating flows and swirling flows.
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