For welding low-alloy and high strength steel with corresponding strength grade.

用于相同强度等级的低合金高强钢的焊接。

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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。

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According to data collected in experiments, freeze-thaw effect on strength and deformation of four different strength grade concretes were analyzed.

通过对试验数据的整理，分析了冻融循环次数对四个强度等级混凝土的强度和变形的影响。

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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Charleston days is that the era spanning 1920 (when the 18th Amendment became law) to 1934 (when the amendment was repealed) was marked by raging culture wars, rampant xenophobia, political upheaval, and threats of death or worse that came more often via poisonous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.

FORBES: Booked Review: Another Round for Prohibition