品质因数

On figure of merit of low light level image intensifiers［J］.

周立伟。关于微光像增强器的品质因数［J］。

The enhancement of the magnetic ferrite thin-film on the inductance and quality factor of the inductor is analyzed.

阐述了磁性铁氧体薄膜对电感的感值和品质因数的增强作用。

On the point of structure optimization, focusing on the optimization to the quantity factor of silicon cantilever, three kind of power attenuation which effect the Q value and the measure taken to lower the power loss are analysed systematically, and finally a high Q value silicon cantilever resonator with an actual Q reaches 540 is developed.

在结构的优化方面，着重对硅梁谐振器的品质因数进行了优化设计，系统地分析了影响Q值的三种能量损耗形式，研究了为减小其能量损耗而采取的措施，最终设计出在检测条件下实际Q值达540的高Q值硅梁谐振器。

The coil parameters include theinductance, quality factor, as well as the magnetic flux density.

计算螺线管内部的磁场、线圈的电感L和品质因数Q，得出随屏蔽体尺寸变化的曲线。

A quality factor is somewhat like a craterpocked surface in a multidimensional space.

一个品质因数有点象多维空间中的一张布满洞穴的表面。

The modulation of sound properties over a wide range of time scales is one of the most obvious characters of Oscine passerine\'s vocal, whose song contains many different kinds of syllables that consist of many more multiple song phrases. In oscine passerine, ipsilateral projections of RA to NXIIts innervates the ipsilateral syringeal muscles exactly, and thus they have strong ability of vocal control with variable tones, high frequency and higher lever of quality.

鸣禽鸣啭的最大特点之一便是其单次鸣唱时间长，鸣唱所包含的音节数量和音节种类繁多，因而由这些音节所组成的句型结构也是复杂多样富于变化，且由于NXIIts严格的侧别控制(每一侧核团只支配同侧鸣肌)，使其具有更强的控声能力，其鸣声音调变化幅度大，频率高，品质因数大，音色好，因而其鸣声也悦耳动听。

It was found that the pemeability of the dust core was almost a constant in the frequency range from 1KHz to 100KHz,and the quality factor Q of dust core increased with increasing frequency.It was also found that Q became higher at the frequency over 50KHz in comparison with that of permalloy in higher frequency.

结果表明，在测量的频率范围内(1KHz-100KHz)，该粉芯的磁导率几乎不随频率变化而变化；粉芯的品质因数Q随频率的增加而增加，在较高频率时有着比坡莫合金粉芯还要高的值，具有应用价值。

The transfer function of the LLC resonant converter can be obtained by using the circuit impedance, ratio of resonant inductance, and quality factor. With proper selection of the resonant tank and modulation of the operation switching frequency, the proposed circuit can achieve zero voltage switching, stabilize the output voltage, and then reduce the switching loss.

其后级之半桥LLC谐振式转换器藉由推导电路阻抗、谐振电感比例值与品质因数得到转移函数，以及利用适当的谐振电路的设计与切换频率的调变的方式达到输出电压稳定，并且令功率开关具有零电压切换之功用，以降低功率开关的切换损失。

Driving the bimorph cantilever at one of its eigenfrequencies with an appropriate force feedback allows obtaining an effective Q-factor up to 103 in water from its original amount of ～ 40, that is, the sensitivity can be improved.

当双晶片在它的某一本征频率下被激励，通过调节一个适当的反馈力，它的机械谐振品质因数在水中可以从40增强到103，因此成像灵敏度获得显著改善。

A 2-port S-parameter measurement with the center-tap grounded is used to extract the equivalent resistance,inductance,and Q-factor.

提出了中心抽头差分电感的中心抽头等效模型，对其差分应用时的单端和差分阻抗进行推导，利用两端口S参数测试提取出等效电阻值、等效电感值和品质因数。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。