| 1. | Certain other elements are needed in trace amounts for cell metabolism .
细胞的新陈代谢还需某些其它的微量元素。 |
| 2. | Even foods that are eaten freshly, we now know, can contain chemicals in trace amounts that could, in large amounts, be dangerous .
我们现在知道，连我们吃的新鲜食品也含有微量的化学药剂，含量一大，就可能有危险。 |
| 3. | Measurement of trace amount phosphorus in potable water
饮用水中痕量磷的检测 |
| 4. | Edgar : there were trace amounts found in the animals ' blood
在动物的尸体里发现痕量 |
| 5. | Determination of the trace amount of cadmium in edible oil
食用油中痕量镉含量的测定 |
| 6. | Recent progress of the determination of trace amounts of cadmium
痕量镉测定方法的最新进展 |
| 7. | Kinetic fluorimetric determination of trace amounts of bromide
催化荧光法分析痕量溴的研究 |
| 8. | Oscillopolarographic determination of trace amounts of cadmium in tin metal
极谱法测定锡锭中痕量镉 |
| 9. | Collection method of trace amount of blood
微量血液采取方法 |
| 10. | Gf - aas determination of trace amounts of cadmium in waste water
石墨炉原子吸收光谱法测定废水中痕量镉 |
