長方形播種 的英文怎麼說

中文拼音 [zhǎngfāngxíngbōzhǒng]
長方形播種 英文
rectangular planting
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 播 : 播名詞（姓氏） a surname
  • 種 : 種名詞（姓氏） a surname
  • 長方形 : oblong; rectangle; oblong shape長方形圖 histogram
  • 長方 : rectangular長方鍵 longitudinal key; 長方體 [數學] rectangular parallelepiped
  • 播種 : （作物栽培措施之一） sowing; seeding播種季節 seedtime; season of sowing; 播種量 seeding rate; 播...
  1. Abstract : a numerical model for wave propagation in water of varying topography and current is proposed, and time - dependent wave mild - slope equation with a dissipation term and corresponding equivalent governing equations are presented. two different expressions of parabolic approximations for the case of the absence of current are also given and analyzed. examples of numerical simulation for wave transformation in large estuarine water areas are provided

    文摘:提出了水深與流場緩變水域波浪傳播數學模型水流中依賴時間變量並考慮能耗的波浪「緩坡方程」及其等價的控制方程組，分析比較了無水流情況此理論模型與其相應的兩種拋物型近似的差別，提供了長江口波浪變形數值模擬計算工程實例.實例表明，該模型能適應河口三角洲大范圍水域波浪傳播數值計算
  2. Stoneley wave is a kind of guide waves propagating along the liquid - solid interface in well. when a sonic beam strikes the surface of a thick plate immersed in a liquid, a stoneley wave is generated. stoneley wave approach is applied on analysis of well logging more and more widely in recent ten years with the introduction of advanced analysis methods for component waves from full - waveform array acoustic log data. the spectrum of stoneley waves are used to identify the fractured zones and quantitatively calculate the fracture parameters of reservoirs, especially to evaluate the validity of fractures at fracture - type complex reservoir

    斯通利波是一種沿井壁傳播的聲波，當聲波脈沖與井壁和井內流體的界面相遇時就會產生斯通利波。近十幾年來，由於長源距和偶極子陣列聲波儀在測井中的廣泛應用和全波形陣列聲波測井資料中各組分波的處理分析方法的進步，可將斯通利波分離出來單獨研究並應用於測井資料分析。斯通利波技術是評價裂縫及其滲透性的有效方法。
  3. Finally, the results are compared with periodic and random chains. then we studied acoustic wave propagation in 1d quasiperiodic and aperiodic systems by means of he transfer matrix. transmission rate, reflection rate, energy flow, logarithmic energy flow, energy density and lyapunov exponent are computed numerically, and compared with periodic and random system

    其次研究了聲波在幾種一維準周期和非周期系統中的傳播，通過轉移矩陣的方法，數值地得到了系統的傳播系數t _ n 、反射系數r _ n 、能流密度j _ n ，能量密度e _ n和lyapunov指數，給出了以上各量與傳播長度n以及頻率之間的關系，同時發現能流及能量密度都具有分形結構，並與周期和隨機系統的結果作了比較。
  4. These researches provide us a basis for forecasting the pests in grain in earlier stage, accurately utilizing pesticides, improving the efficiency of prevention and reducing the loss of stored grain. the sound absorption properties of various types and thickness of grain are measured by means of the standing wave tube technique. the following conclusions can be drawn : for the same thickness the larger grains has a smaller sound absorption coefficient than the smaller grains

    為了有效地研究儲糧害蟲所產生聲信號在各種糧食中的傳播特性，本文採用駐波管法，對十一種不同種類糧食在不同堆積厚度情況下的吸聲性能進行了實驗研究，糧食吸聲特性與其顆粒的大小、形狀、排列方式及糧食堆積厚度等有關，存在一定的規律，得出如下結論：同一厚度下，顆粒大的糧食較顆粒小的吸聲性能差，顆粒由大到小，吸聲系數峰值頻率向低頻方向移動；球形顆粒糧食較長形顆粒吸聲性能差。
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