1. Carefully fill two sampling bottles completely with stream water. Use the dissolved oxygen meter to measure dissolved oxygen in the water. 小心地把两个取样瓶以溪水完全装满。以溶氧量计测量水中的溶解氧量。
2. In soils, thallium is present in the form of water-dissolved and sulfide-, silicate- and organic matter-bound species. Water-dissolved thallium is easy to migrate. 在土壤中,铊主要以水溶态、硫化物结合态、硅酸盐结合态和有机质结合态存在,水溶态的铊容易迁移。
3. After MAP of agricultural grade was dissolved in water, dissolved impurities crystallized in the presence of chemical reagents, but small impurities and viscous suspension made filtration difficult. 把肥料级MAP溶解在水中,加入化学药剂使磷铵中的杂质结晶沉淀并进行溶液的澄清分离,但生成的颗粒细小,溶液黏稠,极难分离。
4. Use the dissolved oxygen meter to measure dissolved oxygen in the water. 以溶氧量计测量水中的溶解氧量。
5. Use the dissolved oxygen meter to measure dissolved oxygen in the water. 以溶氧量计测量水中的溶解氧量。
网络释义
Industrial circulating cooling water--Determination of dissolved oxygen--Iodimetry 工业循环冷却水中溶解氧的测定 碘量法;