After all kinds of mechanical seal damaging are estimated, it is considered that the seal malfunction is mainly because of cooling-water scaling.
统计了机械密封损坏的各种情况，认为冷却水结垢是密封失效的主要形式。
2
Researching from micro mechanical feature of materials and using the strength theory of fabric bundles, we gain the statistical scaling effect of material in normal scale.