If you find any ball bearings wrong, please replace it with new ball bearing. Higher grade ABEC ball bearings do little, and normal grade is enough.

如果你发现有任何轴承坏了，请重新换上好的轴承，最好是用高等级的ABEC轴承，一般等级的轴承也足够了。

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Description of material including material specification, type/grade/class, normal size and material identification applicable.

材料说明包括材料规格、型号/等级/类别、标称尺寸和适用的材料识别号。

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Here is a detailed description on how to shield the railway from Shuangqiaomen Grade Separation construction to stay normal operation of Ning-Wu Railway.

为保证宁芜铁路的正常运营，针对南京市双桥门立交施工，详细介绍对铁路进行支护的施工方法及注意事项。

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It would please them to think of me doing the things that normal children in the sixth grade did, like going to movies.

NPR: Excerpt: 'Warm Springs'

The commercial-grade panel allows a three-year warranty and reliably displays digital signage throughout a normal workday.

ENGADGET: NEC announces business-minded edge-lit LED displays with inbuilt tuners