配置球形表面的两件式压盖保证填料符合超过360%，且均匀稳定。

Two-piece gland with spherical mating surfaces to assure an even packing load over 360%.

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也有单方向和双向推力球轴承球形表面和带有相应的支持形座位垫圈。

There are also single-direction and double-direction thrust ball bearings with spherical supporting surfaces and correspondingly shaped seating washers (Figure 1.49).

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拥有大量微小绒毛的叶子，如蕨类植物，可以将球形水滴聚集在叶子表面。

Leaves that have tons of tiny hairs, like a fern, can hold spherical water droplets in focus above a leaf's surface.

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