Micropowder of mullite is manufactured by gap mill.

采用环缝磨制备了莫来石微粉。

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The method of combining theory and experimentation is used to study the law of movement and characteristic of receiving force of the medium - balls in annular gap mill.

用理论结合试验的方法研究了环缝磨内介质球运动规律和受力特性。

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This article discusses the status of the research of Annular Gap Mill, points out the necessity of further research, concerning the grindingdynamics principle, and tingcrush mechanism.

介绍了环缝磨的研究状况，指出了进一步深入研究的研磨动力学原理，微粉碎机理等问题。

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Some measure of the challenges that await Black are the apparent gap between the best of the charter schools and the run-of-the-mill public schools where too many teachers think of tenure as a sinecure that spares them the need for serious innovation on the educational front.

FORBES: Let Cathie Black Dig Down Deep To Institute Major Education Reforms