例句與造句

1. The methods involve exposing living aquatic organisms to samples of wastewater for a specific length of time.
2. TN concentration in the samples of wastewater stemming from washing ranged from 40 to 150 mg / l with an average over all samples of 110 mg / l.
3. A random sample of wastewater shows a BOD of 959 mg / L . Total wastewater is 5.8 million gal / day . 959 x 3.875 ( liters to gal ) = 3.72gm / gal x 5.8 mgd = 21, 576 kg / day.
4. It's difficult to find sampling of wastewater in a sentence. 用sampling of wastewater造句挺難的