| 1. | Tritium is radioactive and is believed to be the main source of the major traces of 3he found in the atmosphere .
氚是放射性的，并且确信是大气中痕量3He的主要来源。 |
| 2. | Atomic absorption spectroscopy has proved to be a versatile tool in measuring concentrations of trace metals .
原子吸收光谱法已证明是一种用于测定痕量的金属浓度的灵活多用的仪器。 |
| 3. | Catalytic fluorimetric determination of trace nitrite
催化荧光法测定痕量亚硝酸根 |
| 4. | Determination of trace selenium by catalytic fluorimetry
催化荧光法测定痕量硒 |
| 5. | Study on trace metals in coral reef of daya bay , china
大亚湾珊瑚礁痕量金属的研究 |
| 6. | Measurement of trace amount phosphorus in potable water
饮用水中痕量磷的检测 |
| 7. | Edgar : there were trace amounts found in the animals ' blood
在动物的尸体里发现痕量 |
| 8. | Polarographic determination of cadmium in soil
催化极谱法测定土壤中的痕量镉 |
| 9. | Determination of the trace amount of cadmium in edible oil
食用油中痕量镉含量的测定 |
| 10. | Test method for trace chloride ion in engine coolants
发动机冷却剂痕量氯离子测定方法 |
