结果表明：在环-块滑动摩擦实验中，随时间延长，试样摩擦系数均趋向平稳，质量磨损量均增长。
The result shows that in the ring-block sliding wear test, with time prolonging, the friction coefficient of all samples becomes more and more stable, and the mass wear loss increases.
制作的试样是把两块玻璃臂用0。005时厚环氧粘合剂涂层胶合成的。
The specimens were made from two glass arms joined with a0.005-in. layer of epoxy adhesive.
采用浇注型聚氨酯材料，设计了一种管道用胀环试样试验台主密封圈。
Manufactured by casting polyurethane, main seal ring used in expansion ring testing device for pipeline was designed.
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