单词	optical reconnaissance
释义	optical reconnaissance 光学侦察
随便看	system of officials system of old-age services system of one-head leadership system of one man leadership system of one-man leadership system of open sets system of open space system of operation system of operation and management system of operation signature system of operator equations system of optional courses system of ordinary differential equations system of ore dressing system of organism signal system of organization system of organization and operation system of organizations and mechanisms system of orthogonal functions system of orthogonal polynomials system of orthograph system of orthonormal functions system of oscillators system of overall financial responsibility system of ownership