strength grade

基本解释

Good performance colored dry mixed mortar with strength grade of M5~M15 can be prepared by different cement-sand ratio.
按不同的灰砂比可配制强度等级为M5～M15工作性能优良的彩色干混砂浆。
Based on the ISO time-temperature curve, reinforcement cover, reinforcement and concrete strength grade, load level and thickness of slabs are discussed for the fire resistance.
并以标准升温为条件，探讨了不同的钢筋保护层厚度、钢筋及混凝土强度等级、荷载水平、板厚等因素，对钢筋混凝土简支板抗火性能的影响。
Surrounding concrete strength grade shall not be less than core concrete strength grade, but also not too high, it is recommended that it is higher two grades up to core concrete strength grade .
加固用混凝土强度等级不得低于原混凝土强度等级，也不宜过高，建议最多可比原混凝土强度高两个等级；

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Charleston days is that the era spanning 1920 (when the 18th Amendment became law) to 1934 (when the amendment was repealed) was marked by raging culture wars, rampant xenophobia, political upheaval, and threats of death or worse that came more often via poisonous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