| 1. | The rest of the chemical elements occur in only minor or trace quantities .
其余的化学元素仅以少量或微量出现。 |
| 2. | Treating combined sewage effluent from a secondary treatment plant, the process achieved 94.5% cadmium removal for the trace quantities present .
用这种方法处理二级处理厂排出的综合下水，可除去水中含镉量的94.5。 |
| 3. | Standard test method for iron in trace quantities using the ferrozine method
使用锌铁合金法测定微量铁的标准试验方法 |
| 4. | Standard test method for iron in trace quantities using the 1 , 10 - phenanthroline method
用1 , 10 -菲咯啉法测定痕量铁值的标准试验方法 |
| 5. | Standard test method for trace quantities of carbonyl compounds with 2 , 4 - dinitrophenylhydrazine
使用2 4 -二硝基苯肼测定羰基化合物痕量的标准试验方法 |
| 6. | Simultaneous detemination of trace quantity of cobalt and nickel in traditional chinese herbal medicine by adsorption voltammetry
吸附伏安法同时测定中草药中痕量的镍和钴 |
| 7. | Trace quantities of sulfur in light liquid petroleum hydrocarbons by oxidative microcoulometry , method of test for
用氧化微库仑分析法测定轻质液态石油烃类中硫痕量的试验方法 |
| 8. | Standard test method for trace quantities of sulfur in light liquid petroleum hydrocarbons by oxidative microcoulometry
用氧化微库仑测定法测定轻质液态石油烃中微量硫的标准试验方法 |
| 9. | Treating combined sewage effluent from a secondary treatment plant , the process achieved 94 . 5 % cadmium removal for the trace quantities present
用这种方法处理二级处理厂排出的综合下水，可除去水中含镉量的94 . 5 。 |
| 10. | Thermal insulating products for building equipment and industrial installations - determination of trace quantities of water soluble chloride , fluoride , silicate , sodium ions and ph
建筑设备和工业设施用隔热制品.水溶性微量氯化物氟化物硅酸盐钠离子和ph值的测定 |
