4th ladder coconut palm for channel steel type design anti - curving performance although surpasses the first generation , but still insufficient ideal.
2
液态聚硫橡胶增韧的环氧树脂胶表现出良好的抗冲击性能和抗弯曲性能；
Epoxy resin toughened by liquid polysulfide rubber exhibits good anti-impact performance and anti-bend performance.
3
通过弯曲试验和劈裂试验，分析了水泥替代部分或全部矿粉对沥青混合料抗裂性能的影响。
By flexural test and split test, the effect of part or total replacement of mineral powder with cement on and-cracking performance of asphalt mixture is researched.
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