拋物面傳聲器的英文怎麼說

中文拼音 [pāomiànzhuànshēng]
拋物面傳聲器英文
parabolic microphone

  • : 動詞1. (扔; 投擲) throw; toss; fling 2. (丟下; 拋棄) leave behind; cast aside; abandon
  • : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
  • : Ⅰ名詞1 (頭的前部; 臉) face 2 (物體的表面) surface; top 3 (外露的一層或正面) outside; the ri...
  • : 傳名詞1 (解釋經文的著作) commentaries on classics 2 (傳記) biography 3 (敘述歷史故事的作品)...
  • : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
  1. A parabolic concave mirror can converge parallel light rays to its focus, and also collimate light rays that pass through its focus

    凹鏡會把平行而來的光線聚集在一點焦點,亦會把源自焦點的光線平行向外反射。
  2. Measurement of airborne noise from hydraulic fluid power systems and components - method of test for pumps using a parallelepiped microphone array

    液壓動力系統和部件氣動噪測量.第6部分:平行六陣列測試液壓泵噪
  3. Abstract : a large planar microphone array, which consists of 111 microphones, was successfully applied to obtain a two - dimensional mapping of the sound sources on a landing aircraft. the focus of study in this paper is on the landing gear noise source. the spectra, directivities and sound pressure levels of flap side - edge noise of 7 narrow - board commercial aircraft and 7 wide - board commercial aircraft are presented. it is found that the landing gear noise spectrum is broadband with some single tones in some cases. the directivity of the total sound pressure level of a landing gear noise resembles that of a horizontal dipole. the level differences between the various aircraft landing gears are larger than those expected from the airspeed differences. it is thus expected that the louder noise emission of the landing gears can be reduced by redesigning

    文摘:應用由111個組成的平陣列對當前流行的民用客機進場著陸過程中的機體噪源進行了實驗測量,本文對七架窄體客機和七架寬體客機的起落架噪進行了分析,得到了起落架噪的頻譜特性、指向特性和級變化.研究發現,起落架噪的頻譜是由寬頻隨機噪與一些較為明顯的單音噪源組成,起落架噪的指向性類似於一個水平放置的偶極子.不同飛機起落架噪級相差較大,這說明可以通過重新結構設計降低起落架噪
  4. Double speaks have been equipped with face shield to allow effective communication between bearers and others in and out of working venue

    罩內設置了雙重,以其特殊設計令佩戴者有清晰的通訊效果,確保了作業場所的內外交流,提高了工作效率。
  5. With the rapid social development, the traditional reflector is out of date due to its ponderous and bulky shortcomings in modern communication

    由於現代社會對通訊系統靈活機動的要求,統的反射天線笨重、體積龐大的劣勢已經日益顯現。
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