等密线法 [分化] equidensite technique

等密度线 isopycnic ; isopycne ; [气象] isodense ; isopycnicline

等密度曲线 isodenses ; curve of equal density

等温线密集带 isothermal ribbon

等密度的等密度线 isopycnic

电荷密度等值线图 [物化] contour map of charge density

等高线密集 closeness of contours