It shows the axial tension initial cracking strength of concrete increases with the increasing of steel fiber volume ratio and enhancing of concrete strength grade separately.
结果表明：混凝土轴拉初裂强度分别随钢纤维体积率的增大和混凝土强度等级的提高而增大。
2
The results showed that the cracking mechanism ratio (CMR) was distinctly dissimilar over different types of catalysts and was correlated with strong Brnsted acid and weak Brnsted acid.
结果表明，不同类型的酸性催化剂，其裂化机理比率(CMR)明显不同，并与强b酸量和弱b酸量有关。
3
The result showed proper reaction temperature, catalyst to oil ratio and short reaction time may detriment thermal cracking reaction, hydrogen transfer reactions, and get high propylene selectivity.