查询词典 directivity

Different from the typical DOA algorithms, we adjust the directivity of beams with the aid of position information provided by localizers, which can simplify the realizable complexity.

区别于传统的波达方向计算方法，论文中利用节点的位置信息对定向天线的波束方向进行调整，有效的减少了计算复杂度。

Meanwhile, this paper analyzed and compared the frequency spectrum andintensity radiated of the 1/3 octave band of the tire tread patterns' noise whichwas measured from different direction in the laboratory, and find out that tirepatterns noise is similar to the sound of loudhailer and has strong directivity.

同时，本文还对在室内不同方位所测得的轮胎花纹噪声1／3倍频程的频谱图与直方图进行了分析、比较后发现轮胎花纹噪声的发声类似扬声器发声，有极强的指向性，一点测试会导致轮胎方案排队择优上的困难，为此，提出了一种全方位测定声级的方法，拟定了测试规范，实验证明行之有效。

In order to understand the properties of impact toughness of coal with different impact speeds and the change of impact toughness of lump coal to joint directivity of lump coal.

为了研究不同冲击速度条件下块煤冲击韧度的变化特征，以及块煤节理方向性对块煤冲击韧度的变化特性。

NEXT, the effects of trailing edge noise directivity and convective amplification2 (including the Doppler frequency shift) are applied to these radial source strengths , to obtain the effective noise source distribution in the rotor plane ,as perceived by an observer position was taken to be the position.

其次， 后缘噪声方向律的作用和对流amplification2 向这些辐形来源力量被运用，获得有效的噪声源发行在电动子飞机，as 由职位被接受是位置的观察员察觉。

The MR element employed by the direction sensor is insufficient, because the geomagnetism is weak and the directivity complicated.

陈元受雇于风向传感器是不够的，因为地磁是弱者和方向性复杂。

Firstly, in contrast to the dipole resonator, the folded dipole resonator is used to improve the frequency responses. Secondly, two types of folded Yagi-Uda arrays are fabricated, one is the original array with uniform length and spacing, the other is the optimum array with perturbed length and spacing to obtain a higher directivity gain.

首先，应用摺叠式耦极谐振器取代原有耦极谐振器以改善频响应，接著设计组摺叠式Yagi-Uda阵天线，一是保持均匀长与间距的初始阵，一是微调长与间距的优化阵，以得到较高的方向增。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。