Their methods do not attempt to estimate the actual biomass of fish species in particular parts of the ocean, but rather changes in that biomass over time.

他们的方法并不是要评估特定海域鱼种的实际生物量，而是评估在这一段时间内生物量的变化。

youdao

Their methods do not attempt to estimate the actual biomass(the amount of living biological matter) of fish species in particular parts of the ocean,but rather changes in that biomass over time.

他们的方法并不是要评估特定海域鱼种的实际生物量，而是评估在这一段时间内生物量的变化。

youdao

Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time.

他们的方法并不是要评估特定海域鱼种的实际生物量，而是评估在这一段时间内生物量的变化。

youdao

The NIR method is highly specific for the detection of different kinds of fatty acids and it is intended to develop a database of fingerprints for different fatty acid components in algal biomass, with which to analyse actual algae.

FORBES: Looking For Algal Oil With Near Infrared Light