Interesting facts regarding transport were found: 95% was on foot; 80% was within the locality; and 70% was related to the collection of water and firewood and travelling to grinding mills.

人们发现了一些关于交通的有趣事实：95%的人是步行；80%的人住在当地；70%的人的行程与取水、拾柴，以及去磨坊有关。

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The dynamic behaviours of homogenous materials, such as quartz, calcite and wolframite in grinding mills are examined.

本文较为详细地考查了石英、方解石和黑钨矿三种均质物料在球磨机中的磨矿动力学行为。

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This paper gives the results obtained in the industrial test of vertical grinding mills at Rushan Gold Mine, Shandong Province.

本文介绍了立式磨矿机在山东省乳山金矿的工业试验结果。

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At the time the company, which had just 7 employees, manufactured flat belt pulleys, V-belt pulleys, grinding mills and forges.

FORBES: Danish Inventor, Manufacturer Bent Jensen Now Among World's Billionaires

The windmill was a Medieval European innovation and both wind and water mills were not just used for grinding flour but also fuilling cloth, making leather and driving bellows and trip-hammers.

FORBES: What Are Examples of Things in the "Common Knowledge" about History That Historians Almost Universally Consider Incorrect?