頻段選擇器 的英文怎麼說

中文拼音 [bīnduànxuǎnzháiqì]
頻段選擇器 英文
frequency range selector
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 擇 : 擇動詞（挑選） select; pick; choose
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 頻段 : frequency range; frequency channel
  • 選擇 : select; choose; opt; election; choice; culling; alternative
  1. At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength

    由於準相位匹配技術有其獨特的優勢，可以利用非線性光學晶體的最大二階極化張量，如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ （ 33 ） ，其有效非線性系數高出普通非線性光學介質（如bbo 、 lbo 、 ktp ）一個數量級，而且可以人為靈活設計調制周期，通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段，選擇無走離效應，解決了常規pm難以解決的問題，拓寬了非線性晶體的應用范圍，極大地提高了頻率轉換效率，已成為非線性光學材料和固體激光器的研究熱點之一。
  2. Firstly, a reduced order model of this flexible structure is obtained by frequency domain identification, then unstructured uncertainties constituted by neglected modes are taken care of in the time of design process by choosing appropriate weighting functions, arid finally a robust feedback controller is designed based on the reduced order model and the approximate knowledge of unmodeled uncertainties

    首先通過頻域辨識得到柔性結構的降階模型，而剩餘高階模態構成的非結構不確定性，通過對權函數的選擇在設計階段就加以考慮，然後基於降階模型和未建模不確定的近似特性設計了魯棒反饋控制器。
  3. However when the size of the platform is large, or it works in a wide frequency range, or the requirement of vibration control, it is urgent to choose the material ofplatform, arrange isolator and determine thedesign parameters of isolator for obtaining the expected effect of vibration isolation

    但是，如果平臺尺寸很大或是要求的工作頻段較寬或振動控制要求很嚴時，如何選擇平臺材料及布置隔振器，如何合理地確定隔振器的設計參數，使其達到預期的隔振效果，是一個亟需解決的問題。
分享友人
分享到 Line

分享到臉書