A proper rack, with the two corner balls of a different suit and the 8 ball in the center.

一个适当的架，借由中心的不同诉讼和8球的二个角落球。

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Adoptsimported linear square rails, high-precision helical rack, doublerow and four column ball slider, heavy loading, stable operation, high precision, longlife.

采用进口直线方形导轨，高精度斜齿齿条，双排四列滚珠滑块，承重冗余大、运行平稳，精度高，寿命长。

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This paper introduces the method of simple conversion measuring and calculation for gear rack thickness with depthometer as prime measuring tool and measuring Pin, measuring ball as auxiliary tool.

介绍了以深度尺为量具，以棒、球为辅件的齿条齿厚简易转化测量与计算方法。

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Aluminum foil as glassware scrubber: To get baked-on food off a glass pan or an oven rack, use dishwashing liquid and a ball of foil in place of a steel-wool soap pad, says Mary Findley, president of the cleaning-products developer Mary Moppins.

CNN: New uses for Thanksgiving items