词汇	i-chard
释义	i-chard n.Ichard人名；法伊沙尔
随便看	principal planes principal planes of bending principal planet principal planets principal player principal plot principal plotter principal point principal point angle principal-point assumption principal point error principal point location principal point of curvature Principal point offset principal point of objective principal point of photograph principal-point radial principal point radial line plotting principal point refraction principal points principal point the frame principal point trangulation principal point traverse principal point triangulation principal polarizabilities