If the workers level pretty good, and the tool grinding ceramic tile good words, he should not hesitate a moment to prefer mill 45 degree Angle of the practice of the diagonal.
如果泥水工人水平不错，而且磨瓷砖的工具比较好的话，就应该毫不犹豫地选择磨45度角对角的做法。
Removal of loose rust, loose mill scale and loose paint by power tool chipping, decaling, sanding, wire brushing and grinding to a specified degree.
用电动工具削、磨、刷去不牢固的锈迹、氧化皮、漆皮，以达到指定等级。
Ball mill is an efficient tool for grinding many materials into fine powder.
球磨机是一种有效的工具磨许多材料成细粉。
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