- 相关词组
- frequency modulation调频;
- expected frequency[医]期望频率;
- acoustical tile隔音砖，吸声砖;
- radio frequencyn.无线电频率;
- audio frequencyn.成音频率，音频;
- acoustical screen隔音板;
- acoustical insulation隔声;
- acoustic frequency音频;
- high frequencyn.高频率，频繁出现;
- acoustical plaster吸声灰膏;
- acoustical resistance声阻;
- frequency band频带;
- very high frequencyn.特高频率(VHF);
- warble frequency颤音频率
- acoustical lining吸音隔板;
- frequency diversity频率分集[分隔];
- ultrahigh frequencyn.超高频率，特高频;
- acoustical fiberboard吸声纤维板;
- acoustical ceiling吸声天花板;
- acoustical board[化] 隔音纸板;
- 今日热词
- 热门搜索
- irrigate vt.灌溉;冲洗（伤口）;使清新;vi.灌溉;冲洗;
- kindergarten n.学前班;幼儿园;
- favourite adj.最喜爱的;n.受宠的人;夺标热门;
- encourage v.鼓励;使有希望;劝说;促进;
- soften vt.（使）温和;使缓和;减轻;变柔和;vi.变软;
- pigeon n.鸽子;
- so as to 为了…;以便;庶几乎;庶乎;
- who you 你是谁;你谁;
- metal n.金属;金属元素;成色;金色;vt.以金属覆盖;
- The Outlaws 亡命之徒
- negotiate vi.谈判，协商，交涉;vt.谈判达成;成功越过;议价出售;
- afraid adj.害怕的;担心的;恐怕;畏惧，害怕;
