词汇	number of rules
释义	number of rules 规则数
随便看	polar coordinate vectors polar coordination programming polar coordinatograph polar coordingating method polar coordonates polar core polar corona polar corpuscle polar correlation polar correspondence Polar coupled column polar covalence polar covalent bond polar covalent bonds polar covalent compound polar crane polar crane in reactor building polar crane supporting skirt polar coordinates polar co-ordinates polar coordinates difference method polar-coordinates drill boom polar coordinates equation polar coordinates in plane polar coordinates in the plane