低频

With the electrical connections at the top and bottom side of the wafer-level IC packaging Lead-frame structure and composition of the surface-mount semiconductor package structure Multi-layer printed circuit board Antifuse and its formation method and with the anti-fuse non-volatile memory device unit cell Tandem electric signal processing circuit and electronic device Light-emitting diode packaging structure and encapsulation method Electronic Packaging Structure Flip-chip high-speed optoelectronic components and structure Pairs of piezoelectric friction side by side to promote the three-step device and scanning probe microscope Light-emitting diode and its manufacturing method, the production base of light-emitting diode method Three or four parallel advance of stepping piezoelectric device and scanning probe microscope lens body Silicon substrate and its manufacturing method Semiconductor device and voltage-divider A polysilicon layer and the microcrystalline silicon layer of the double-substrate active layer structure, methods and devices The edge of the thickness of silicon controlled Of a lateral semiconductor devices and high-voltage devices With a vertical-channel transistors semiconductor device Of a memory array and for the manufacture of a memory array method Read-only memory cell array structure Active-matrix substrate and display device High-voltage semiconductor integrated circuit devices, dielectric isolated type semiconductor device Image sensing devices Lens module and its manufacturing methods Solid-state imaging device and camera Injection angle for the trench isolation Organic Light-Emitting Display Device Organic light-emitting display device Bipolar transistor structure of the surface passivation Double-triggered silicon-controlled rectifier HFET Metal-oxide semiconductor transistors Self-aligned trench accumulation mode field effect transistor structure Thin-film transistors and Display Devices TFT Lead Diode Low-frequency, low noise, low-flashing diode Used for thin-film solar cells trap light structure Transparent sun solar cells Quaternary semiconductor heterojunction photovoltaic cells heat Si nano-pillar array heterojunction thin-film solar cells GaN-based micro-composite solar cells isotope Optical sensor Semiconductor by optical components Imaging Detector Transparent conductive oxide coating Silicon-based high-performance dual-junction solar cells Thin-film solar cells Alien LED Devices

非专业，不在行，求高手帮忙。谢谢！具有顶部及底部侧电连接的晶片级集成电路封装导线架结构及其构成的表面黏着型半导体封装结构多层印刷电路板反熔丝及其形成方法和具有该反熔丝的非易失性存储器件的单位单元串联用电式信号处理电路及电子装置发光二极管的封装结构及其封装方法电子封装结构高速光电组件及其芯片倒装结构双压电体并排推动的三摩擦力步进器与扫描探针显微镜发光二极管及其制作方法、发光二极管的底座的制作方法三或四压电体并行推进的步进器及其扫描探针显微镜镜体硅衬底及其制造方法半导体装置与分压电路具多晶硅层及微晶硅层的双底材主动层结构、方法及装置硅晶片的受控边缘厚度一种半导体横向器件和高压器件具有垂直沟道晶体管的半导体器件一种记忆体阵列及其用于制造一记忆体阵列的方法只读内存单元阵列结构有源矩阵基板和显示装置高耐压半导体集成电路装置、电介质分离型半导体装置图像感测装置透镜模块及其制造方法固态成像装置和照相机用于沟道隔离的斜角注入有机电致发光显示装置有机发光显示装置双极晶体管的表面钝化结构双触发型可控硅整流器异质结场效应晶体管金属氧化物半导体晶体管自对准沟槽累加模式场效应晶体管结构薄膜晶体管及显示器件薄膜晶体管无铅二极管低频、低噪音、低闪烁的二极管用于薄膜太阳电池的陷光结构透明遮阳太阳能电池片四元半导体的异质结热光伏电池硅基纳米柱阵列异质结薄膜太阳能电池氮化镓太阳能同位素复合型微电池光学传感器半导体受光元件成像探测器透明导电氧化物涂层硅基高效双结太阳能电池薄膜太阳能电池异形LED器件

Several methods of sharp a narrow beamwidth is presented and used to form a narrow directivity.

文章还提出了多种矢量水听器指向性锐化的方法，通过这些方法在低频形成恒定束宽窄指向性。

The experiment results of the improved and the former charger/discharger are given in the end. The results indicate that the harmonic currents of the improved one have been reduced obviously.

最后，论文通过实验对改进前后充放电器电路的输入电流进行了比较，表明该改进方案对输入电流的低频和高频谐波都有较好的抑制效果。

The characteristics of the dispersive relation and the propagation of plasma low frequency noise are discussed in details.

具体地讨论了在热传导条件下色散关系的特殊性质和相应的等离子体低频噪声的传播形态。

Theoretical analysis was carried out to achieve the analytical expression for Doppler shift and amplitude of liquid surface wave.

对此进行了理论分析，得到了多普勒频移与液体表面波振幅之间的解析关系式，并利用贝塞尔函数分析了频谱分析图中解调出低频液体表面波频率的可行性，设计并实现了一套液体表面波多普勒相干检测的实验装置。

Except for the high frequencyvibrations related to the changes of bond lengths and bond angles,the low frequencyvibrations related to the changes of double plane angles contribute to the internalreorganization energy significantly.

除与键长，键角变化相应的高频振动的贡献外，与二面角变化相应的低频振动对内重组能也有显著贡献，这也是导致〓，〓，及〓体系内重组能及自交换速率常数不同的主要原因。

PA-226 is same as PA-206 but equipped with two 6 LF driver for better low frequency response.

PA-226的设计与PA-206基本相同，但配置了两只 6 寸低音单元，可提供更佳的低频响应。

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。

MD-12 is a solid high-power frequency of the two systems, there is a strong 12-inch low frequency driver and a 1-inch high frequency compression driver mounted on a continuous point of 80 degrees on X50 degree horn.

MD-12是一个高功率的坚固的二分频系统，有一个强劲的12英寸低频驱动器和一个1英寸高频压缩驱动器安装在一个持续指向性80度X50度号角上。

We often tell customers: One of our subs will drop your jaw with deep, accurate bass.

我们经常告诉客户："一只低音炮带来的精准深度低频让你瞠目结舌，两只低音会让你吃惊到下巴掉在地上"。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。