Abstract: A surface water quality monitoring method based on a high spatial resolution satellite includes: step 1. building standard surface water quality pools by mixing natural water bodies with clean water in different proportions to obtain surface water quality data; step 2. obtaining high spatial resolution remote sensing images for processing; step 3. identifying remote sensing bands with higher correlation through correlation analysis by presetting ratio values of remote sensor data bands and the standard surface water quality pools; step 4. building a water quality parameter retrieval model, and comparing and retrieving the remote sensing bands with higher correlation and the surface water quality data to obtain water quality data; and step 5. identifying abnormal points of the water quality based on the water quality data and water quality data threshold of the surface water.

Abstract: A keyboard with adjustable key rows comprises a plurality of keys arranged as left-hand and right-hand parallel key rows, including three left-hand alphabetic key rows and three right-hand alphabetic key rows. At least two said key rows are adjustable key rows that are mounted on individual sliding bases and can be shifted in their supporting slots for continuously adjusting the key row positions for typing operation. Locking means, adjusting means and linking means are presented for facilitating the adjustments of said adjustable key rows. The operator of said keyboard can reorganize the key arrangement of said keyboard flexibly and ergonomically according to the operator's typing preferences to increase comfort and typing speed.