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。
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。
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.
结果表明：适当的反应温度，剂油比，反应时间短，可能损害的热裂化反应，氢转移反应，并获得高的丙烯选择性。
Compared with the normal concrete, ratio of the splitting tensile strength to the compression strength of recycled aggregate concrete with fly ash is increased, and the cracking resistance improved.
掺粉煤灰再生骨料混凝土的拉压比与同强度等级的高强混凝土相比有所提高，抗裂性能有所改善。
The catalyst has excellent anti-metal performance when being used in heavy oil cracking reaction, and can increase the weight ratio of liquefied gas, gasoline and diesel fuel in the product.
本发明的催化剂在用于重油裂化反应中时具有优秀的抗金属性能，且能够提高产物中液化气、汽油和柴油的重量比。
Although the 7075-t6 aluminum has a much higher strength to weight ratio, it does have a higher tendency of cracking than 6061 T6.
虽然7075-T 6铝合金具有重量比，它的强度高得多确实有一定的打击比6061至T6高的趋势。
The effect of feed properties such as heavy aromatic content of fresh feed and recycle ratio on the cracking characteristics was also...
原料油性质对反应动力学的影响分别从新鲜原料油重芳烃含量和回炼比两方面考虑。
The factors which affect early age cracking were studied such as curing methods, workability, sand ratio and modulus of sand. Corresponding solutions were put forward.
探讨了养护条件、混凝土工作性能、砂率以及砂的细度模数等因素对混凝土早期开裂的影响，并提出了减少、避免开裂的相应措施。
In the case of the repeated loading, this paper deduces the formula of the maximum reinforcement ratio which can prevent the cracking of the axial compressive pillar from cracking when it is unloaded;
分析了影响钢筋混凝土轴心受压柱最大配筋率的几种因素，并用实例演示了考虑混凝土徐变后，该公式在结构设计中的应用。
This article introduces how the mill steel fibers act on mass concrete and prevent concrete from cracking, the actual mixture ratio design and tensile strength calculation.
通过试验研究了高性能路用水泥混凝土的配合比设计，测试了混凝土的强度性能、收缩性能和抗冻性能。
This article introduces how the mill steel fibers act on mass concrete and prevent concrete from cracking, the actual mixture ratio design and tensile strength calculation.
通过试验研究了高性能路用水泥混凝土的配合比设计，测试了混凝土的强度性能、收缩性能和抗冻性能。
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