longitudinal band 中文意思是什麼
longitudinal band
解釋
縱刪帶- longitudinal : adj. 1. 經度的，經線的。2. 縱的，縱向的。adv. -ly
- band : n 1 帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〈pl 〉 （法官等的）寬領帶。2 束縛，羈絆；義務；...
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Abstract : a new waveguide which can change the wide wall of a rectangular waveguide into a symmetric arc wall is named as a cam - rectangular waveguide. comparing to sectoral waveguide, the new waveguide has the same voltage characteristics and is easier to be produced and fixed. an approximate formula of the dominant mode fields and the normalized conductance of a longitudinal resonant slot cut in the curved wall of a cam - rectangular waveguide are given. a resonant slot linear array in c & x band is designed, in which the slot voltage distribution is equiphase and the input is matched. the input voltage stationary ware ratio and the h - plane pattern of the antenna are measured. the experimental results show the conformance with theoretical results
文摘:把常用的矩形波導一個寬面改成圓弧形構成的波導稱為圓突-矩形波導.這種波導與扇面波導相比：電性能相當；波導管結構更加簡單，容易加工，便於安裝.文中給出圓突-矩形波導中主模場，圓曲面上縱向槽歸一化諧振電導近似公式.設計了c和x波段波導曲面縱向諧振縫隙線陣，縫隙電壓相位為同相分佈，輸入端匹配.實際測量了天線輸入端電壓駐波比和h面方向圖，理論與實驗相吻合 -
" one band " points at a green band that around the longitudinal traffic greenbelt of beijing - guangzhou railway and beijing - jiulong highway
「一帶」指一條中部綠色帶，即圍繞京廣鐵路和京九高速公路的縱向交通綠化帶。 -
The antenna is obtained by extending the longitudinal strip of the fin - line, and etched on a metallized dielectric substrate. it is operating at ka band ( center frequency : 34ghz ), which has a good agreement between simulated and measured results. its e - and h - plane 3db main lobe beamwidth are 79. 25 and 80. 03 degrees respectively with sidelobes less than - 10db
天線工作的中心頻率為34ghz ， e面和h面測試方向圖主瓣寬度分別為79 . 25o和80 . 03o ，旁瓣電平均小於- 10的db ，模擬和試驗結果基本一致，所設計天線的各項指標經測試基本達到要求。 -
Design of wide - band longitudinal mode piezoelectric transducers with impedance matching layers
具有阻抗匹配層的寬帶縱向振動壓電換能器設計 -
The main performances of band drain include flow capacity, tensile strength, longitudinal and transverse tensile strength of filter fabric, longitudinal and transverse tear strength, water permeability and effective opening size etc
反映排水板性能的主要指標包括：通水量，抗拉強度，濾膜縱橫向抗拉強度，縱橫向抗撕裂強度，滲透性和有效孔徑等。
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