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In the urban-rural transitional area of Hangzhou, China, 74 topsoil samples were collected from vegetable fields to measure the contents of arsenic (As), copper (Cu), cobalt (Co), cadmium (Cd), chromium (Cr), mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn). The combination of multivariate statistical and geostatistical methods(More)
The measurement of bending angle is important for high precision bending machine. In order to detect the real time bending angle of the bending workpiece, a non-contact angle measurement system was developed, which combined binocular cameras and linear laser. In this study, the system was designed based on the laser triangulation. By analyzing the images(More)
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