单词	交换键控
释义	交换键控exchange keying
随便看	composite dialing composite die composite dielectric capacitor composite dike composite display composite disturbance composite disturbance vector composite document composite doped channel composite dorso-plantar projection composite double-base composite drawing composite dyke composite economic indicator composite efficiency composite egg composite electrical insulation composite electrode composite engine composite environment test composite error composite estimate composite estimator composite event composite excitation