The particle volume increases by 37% after alkali and acid treatments, and the average number of hollows per particle is 8.
透射电镜结果表明，碱、酸处理后胶粒体积增大了37%，平均每个胶粒上有8个微孔。
A large number of experiment studies are performed for basalt crushed aggregate alkali activity by different test methods at site of Xiluodu hydropower station.
用多种检测方法对溪洛渡水电站当地的玄武岩人工骨料的碱活性进行了大量的试验研究。
The national standard is used to determine the performance of the ion exchange resin. acid and alkali of the old resin can not be limited to the number of times in the treatment of national standard.
运用国标测定离子交换树脂，对旧树脂的酸碱处理不能限于国标中次数，应检验排出液中杂质含量；
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