单词	positive field
释义	positive field 正域
随便看	rectangular group congruences rectangular groups rectangular guide rectangular guide bar rectangular guide ferrite phase shifter rectangular guideway rectangular hard.edged aperture rectangular head rectangular-head rectangular head bolt rectangular header Rectangular helix rectangular Helmhohz coin rectangular hexahedron rectangular histogram rectangular hole rectangular hollow bridge pier rectangular hollow pier Rectangular hollow section rectangular hollow section member rectangular hollow sections rectangular hollow tube with opening rectangular honing stone rectangular hoops rectangular horn