查询词典 directivity

Directivity requirement of sound picking system can be realized by using an acoustics structure or a microphone array.

传声器系统指向性的实现主要有两种途径：一是通过特殊的声结构，二是通过传声器阵列。

The directivity of emitter by changing the number and relative location of ultrasonic transducers are simulated.

通过改变换能器数目及之间的相对距离，模拟了超声发射阵的空间指向性。

The main display is the space directivity and level of electronic population of transition metal atomic d orbit at the surface.

其主要表现是表面上过渡金属原子d轨道的空间取向和电子的布局水平的变化。

By the nonlinearity of the propagation medium-air, the audible sound with high directivity can be produced.

利用超声波在空气中传播的非线性交互作用，可以产生高指向性的可听声音。

Fair or not will directivity affect the enhancement of efficiency?

再次，以两点论和重点论的统一来把握公平与效率的关系。

The system is comprised of a 12 low frequency driver and a large-format, high frequency compression driver, coupled to a constant-directivity 90° x 40° horn.

该系统是由一个12低频驱动器和一个大型的格式，高频压缩驱动器，加上一个恒定指向90 °× 40 °角。

A 14XT compression driver with a 1.4 inch titanium diaphragm is coupled to an extremely smooth constant directivity horn with Sound Guard II high frequency driver protection.

14XT压缩驾驶员用一个 1.4 寸钛横隔膜与健全的守卫一起加倍到一个极端地平滑的持续择向性喇叭 2 高的频率驾驶员保护。

Part II: The school moral communication, being a special form of moral communication, has its own characteristics, such as directivity, exemplarity, emotivity, inspirativity, stability and consistency.

从交往主体看，学校道德交往可分为五大类型，每一类形式的道德交往都蕴涵着丰富的教育内容。

By reason of the dipole directivity of particle velocity sensor and also the acoustic intensity averagor, and its being able to realize the electronic rotation, coherent interferences can be effectively suppressed by skillful use of its zero point and extremal point.

振速传感器和平均声强器具有偶极子指向性，并且该指向性可实现电子旋转。巧妙利用偶极子指向性的零点和极值点，可有效地抑制声场中的相干干扰。

The directivity gain was 6dB using the optimal weighting for four components vector sensor.

对于四输出分量的矢量传感器来说，声压和振速加权处理在各向同性噪声场中可以获得4.8dB的空间指向性增益，最优加权处理可以获得6dB的空间指向性增益。

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。