例句與造句

1. Gross primary production can be estimated from measurements of net ecosystem exchange ( NEE ) of carbon dioxide made by the eddy covariance technique.
2. Scaling ecosystem-level GPP estimations based on eddy covariance measurements of net ecosystem exchange ( see above ) to regional and global values using spatial details of different predictor variables, such as climate variables and remotely sensed fAPAR or LAI led to a terrestrial gross primary production of 123? Gt carbon ( NOT carbon dioxide ) per year during 1998-2005
3. It's difficult to find net ecosystem exchange in a sentence. 用net ecosystem exchange造句挺難的