并简叙了玻纤增强塑料熔合缝的结构和性能。
Indicate the properties and structure of knit-lines for fiber reinforced plastics.
介绍环氧树脂涂层钢筋和纤维塑料筋的材料及结构性能以及国内外的最新研究成果。
It introduces the performance concerning materials and structures of the epoxy - coated bar and fiber reinforced plastic bar and the latest achievement of research on them.
经改善钢材质量、采用塑料保持架、改进挡边结构及凸度滚子的应用，可使圆柱滚子轴承的寿命和性能大幅度提高。
By improving steel material quality, adopting plastic cage, improving rib structure and using crowned rollers, the life and performance of cylindrical roller bearing can be largely increased.
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