要有很高的油膜强度和良好的润滑性能。
Must have the very high oil film strength and the good lubricity.
具有结构先进，密封性好，抗拉强度高，耐腐蚀，高弹性，自润滑性能好，摩擦系数低等特点。
This product possess advanced structure, good sealing performance, high tensile strength, corrosion-resisting, good elasticity, good self-lubricating character, small friction coefficient, etc.
改善润滑性能和提高接触强度是蜗杆传动研究的一个重要目的。
The problem to improve the lubricating performance and to increase the contact strength are important objects in the studys of worm gearing.
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