directivity
美 [d?rek't?v?t?] 
英 [d?rek't?v?t?]
- n.指向性；方向系數；定向性
- 網絡方向性；指向特性；天線方向性
英漢解釋
例句
The directivity fibers on the surface, could prevent run down of the suspended solid.
由于表面有方向性植毛，可有效阻止污泥的流失。
The poor design of the enclosures could cause the irregularity in frequency responses and directivity patterns.
不良的設計會導致頻率響應不平緩，且頻響隨空間角度出現較大變化。
By the nonlinearity of the propagation medium-air, the audible sound with high directivity can be produced.
利用超聲波在空氣中傳播的非線性交互作用，可以產生高指向性的可聽聲音。
A dual ayer array of strip rectangular dipoles structure is investigated, leading to a directivity bandwidth enhancement.
一雙的唉陣列的條更長方形的偶極子結構被調查導致一方向性帶寬增強。
To improve the directivity and gain, the four units of plate end-fire antennas are arranged in the direction of end-fire.
為了提高增益和方向性，把四個平板端射天線單元在端射方向上排列。
If have no a definite train of thought have no a directivity can follow deeply , so get turn over and lose.
如果沒有一個確切的思路，沒有一個指向性的深出可循，那么，得到的反而就少了。
Meanwhile, there was obvious directivity of topographic effects.
地形放大效應存在明顯的方向性；
Compared to microwave, millimeter-wave has good directivity, Its detecting and imaging system can have higher resolution.
與微波相比，毫米波的指向性更好，其探測成像可實現更高的分辨率；
Coordinate transformation approach is introduced to manipulate the directivity of antennas.
利用坐標變換法設計方向性可控的高指向性天線。
Compared to microwave, millimeter-wave has good directivity, strong anti-jamming ability, and can penetrate plasma etc.
與微波相比，毫米波的指向性好、抗干擾能力強、能夠很好地穿透等離子體等；
The directivity of emitter by changing the number and relative location of ultrasonic transducers are simulated.
通過改變換能器數目及之間的相對距離，模擬了超聲發射陣的空間指向性。
The article studies a method of raising directional precision by amplitude shading in sensor arrays directivity design.
本文探討了在傳感器陣的指向性設計中利用振幅束控提高系統定向精度的一種方法。
moreover , taking on the rayleigh integral the far field acoustic pressure and the directivity formula is obtained.
并對其聲場遠場采用瑞利積分推導了一般表達式和指向性公式。
At the same value of frequency and size, the directivity of quadrate ring piston is sharper than that of quadrate piston.
在同一聲波頻率以及相同尺寸的情況下，方環活塞聲源要比方形活塞聲源的遠場指向性更尖銳。
Dispersion Angle vs Frequency This graph displays the MR64B's excellent horizontal and vertical directivity control.
色散角隨頻率該圖顯示MR64B的良好的橫向和縱向指向性控制。
Then they discovered that the directivity of the magnet.
后來又發現了磁石的指向性。
the directivity , sensitivity and gain of the extended hydrophone are researched based on the model.
以此模型為基礎，計算分析了成組光纖水聽器的指向性和靈敏度。
The antenna received signals with no directivity.
那種天線可接受沒有方向性的信號。
DENG Xiao-ping higher education thought has strategic, characteristic and so on directivity, openness and national characteristic.
鄧小平高等教育思想具有戰略性、方向性、開放性及民族性等特征。
In the long period range, the spectral acceleration of motions with fling step is generally larger than that with forward directivity.
而在長周期段，含滑沖效應地震動的譜加速度大于含破裂向前方向性效應的譜加速度值。
The oil seal has the directivity, cannot install instead.
油封有方向性，不能裝反。
Comparing to other ranging method, the laser ranging has better directivity and the higher range precision, and it can ranges further.
激光測距與其他測距方法相比具有更好的方向性和更高的測距精度，且測程遠，抗干擾能力強。
At the same time, it has good parameters of wide band, good directivity and stable phase center and so on.
同時，其具有較寬的工作帶寬、良好的方向性和穩定的相位中心等性能參數。
The good "8" cosine vector directivity and frequency response curves are obtained, and the sensor's sensitivity reaches -184. 6dB at 1 KHz.
獲得了較好的“8”字形矢量指向性和頻響曲線，水聲傳感器的靈敏度在1KHz時達到-184.6dB。
In addition, another microphone was placed at h = 45 (0. 35, 0. 35, 0) to assess the noise directivity of the exit jet.
此外，在h=45度（0.35,0.35,0）處放置另一個麥克風，以評估出口射流的噪聲方向性。
The directivity of two-dimensional wavelet transformation and its application in FMI image
二維小波變換的方向性及其在FMI圖像處理中的應用
Additional sound transmission loss resulting from directivity in the vertical plane of a receptive array
接收基陣垂直指向性引起的附加聲傳播損失
Simulation of Vertical Directivity of Hydrophone Triplets Towed Line Sonar by the Optimal Array Processing
三元組拖線陣聲納垂直指向性最佳陣處理仿真
Numerical computation and experimental test of directivity pattern of low frequency flex-tensional transducer
低頻彎張換能器指向性數值計算及實驗測試
Research on the Directivity of the Audio Directional Transducer Array of Audio Beam Loudspeaker
聲束揚聲器的聲頻定向換能器陣列指向性研究
Simple Technique for Accurately Determining Coupler Directivity
精確確定定向耦合器方向性的簡單方法
The research of directivity of the sound field through mechanism of laser-induced liquid breakdown
液體中光擊穿所激發聲場的方向性
Double frequency narrow directivity technology with single acoustic vector sensor
單矢量傳感器倍頻窄波束技術研究
The Synthesis of the Directivity Pattern to The Broadband Printed Dipole Array Antenna
寬帶印刷振子天線陣方向圖的綜合
Analysis and experiment study on directivity of vector sensors located on complicated boundaries
復雜邊界條件下矢量傳感器的指向性分析及實驗研究
On Influencing Factors of the Directivity of Phased Array Transmitter in Acoustic Log
相控線陣聲波測井輻射器指向性影響因素研究
Acoustic Principle and Application of Super Directivity Microphone
超指向性傳聲器的聲學原理及其應用
The Rayleigh Wave's Sound Pressure and Directivity Pattern in the Field for Rectangle Wafer in Ultrasonic Wave Probe
矩形晶片的楔形超聲換能器瑞利表面波遠場聲壓及指向性圖案
The Application of Virtual-instrument in the Radar Directivity Pattern Measurement
虛擬儀器在雷達天線性能方向圖測試中的應用
Methods of Moment on Monopole Antenna Directivity With Ground Reflection
考慮地面反射時單極天線方向性的矩量法分析
