collimating element准直: alignment; collimation器: implement; utensil; ware准直管: collimator平行: of equal rank; on an equal f ...光: light; ray下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:准直器,准直管,平行光管,即可在微信中查询翻译