half-period zones半周期: half cycle; semiperiod; one- ...带: belt; girdle; ribbon; band; ...菲涅耳半周期带: fresnel half period zones周期带: period strip; periodic zone半周,半周期: half cycle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:半周期带，即可在微信中查询翻译
