Now the present code has got considerable changes in concrete grade of strength. In order to understand and put the present code into practice correctly, this paper has stated …

为了正确理解和执行现行规范，本文采用对比的方式叙述了这种变化，并导出了对工程非常有用的混凝土强度等级与原规范混凝土标号之间的换算关系。

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Founded in 1989, specializing in the production of high-grade lock, enterprise strong technical strength, advanced production technology, strict quality management.

公司建立于1989年，专业生产中高档锁具，企业技术力量雄厚，生产工艺先进，质量管理严格。

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In the test, the strength grade of concrete is C20 and C60, and the cementitious system contains 10%, 20%, 30% and 40% of fly ash in accord with weight.

实验中应用的混凝土的强度等级分别为C20和C60，其中粉煤灰的掺量(胶凝材料的质量分数)分别为未掺、10%、20%、30%、40%。

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Lost in the celebration of those halcyon Charleston days is that the era spanning 1920 (when the 18th Amendment became law) to 1934 (when the amendment was repealed) was marked by raging culture wars, rampant xenophobia, political upheaval, and threats of death or worse that came more often via poisonous industrial-strength alcohol masquerading as low-grade liquor than the rat-a-tat-tat of a Tommy gun.

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