| 单词 | detectable levels |
| 释义 | detectable levels According to an industry group, the use of chlorine dioxide in these processes has reduced the dioxin generation to under detectable levels. Retrieved from Wikipedia CC BY-SA 3.0 About 15% of the samples had detectable levels of dihydro-1,3,5-triazine or a high dicyandiamide concentration. Retrieved from Wikipedia CC BY-SA 3.0 A test of river water near the spill showed elevated levels of lead and thallium, and barely detectable levels of mercury and arsenic. Retrieved from Wikipedia CC BY-SA 3.0 The worst affected zones are fenced off; detectable levels of radioisotopes are present in the soil, insects and trees in the surrounding areas. Retrieved from Wikipedia CC BY-SA 3.0 Ammonia and nitrite should be tested regularly; any detectable levels (i.e., over 0 ppm) can be indicative of a problem. Retrieved from Wikipedia CC BY-SA 3.0 |
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