aggregate concentration造句

例句与造句

1. A 2010 survey reported 98 pesticides and metabolites detected in aggregate concentrations up to 214 ppm in bee pollen; this figure represents over half of the individual pesticide incidences ever reported for apiaries.
2. Aggregation studies can also be done using ASEC although the aggregate concentration may not be calculated, the size of the aggregate will be measured only to be limited by the maximum size eluting from the SEC columns.
3. It's difficult to find aggregate concentration in a sentence. 用aggregate concentration造句挺难的