n.[电工学]初级线圈( primary的名词复数 )；[天文学]本行星；[核物理学]初级宇宙线；党内初选 英英释义： primaryn.a preliminary election where delegates or nominees are chosen同义词：primary electionone of the main flight feathers projecting along the outer edge of a bird's wing同义词：primary featherprimar