The mean value of work loads on a shaft bearing of swivel and rotary table is determined by basic principles of fuzzy theory, considering the loads' fuzziness and the requirement for reliability.
考虑钻机(水)龙头和转盘主轴承工作载荷的模糊性及可靠性要求，应用模糊数学基本原理求得平均计算载荷，从而计算出主轴承的模糊可靠性寿命。
If you perform a number of tasks, an L-shaped desk or table works best, as well as swivel chair.
假如你要执行多项任务，那么L型的桌子和转椅就最适合你了。
Some of these shelves can be attached to the underside of any table. They can slide out, be adjusted to any height, and swivel from side to side.
有些架子可以固定在桌子下方，可以滑动、调整高度、可以旋转。
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