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1·According to the results, the compressive strength of concrete was affected directly by different gradation of harsh aggregate.

结果显示，分档比例不同，会直接影响混凝土的抗压强度。

2·The blasted objectives are scrap iron lump of several tens ton weight, reinforced concrete beam, pillar and side wall respectively. The work-condition is harsh.

这三次爆破目标是重达几十吨的废铁铊、钢筋混凝土梁、柱和边墙，其作业条件苛刻。

3·One application, he says, might be wastewater treatment plants, where harsh chemicals are used in concrete-lined lagoons full of waste.

其中一个应用对象，他说，或许可以是废水处理厂。因为处理厂用混凝土筑砌的泻湖中充满废水，化学环境十分严酷。