例句 /

The concentrations of ∑PAHs were 7 .99, 7. , 8., 0. and . ng/g in liza carinatus、crab、muraenesox cinereus、nereis and mugil cephalus, respectively.

The concentrations of ∑PAHs were 7 .99, 7. , 8., 0. and . ng/g in liza carinatus、crab、muraenesox cinereus、nereis and mugil cephalus, respectively.

表层沉积物中∑PAHs为8.~7. ng/g,平均值为 8. ng/g。