查询词典 db

To have a net "transparency" in audio response, it becomes necessary to pre-emphasize the transmit audio at a corresponding 6 dB per octave rate.

为得到一个净"透明"的音频频率响应，需要对传送的音频进行预加重，速率是6dB/OCT。

The major difference between these two schemes is that a phase modulator has a 6 dB per octave rising audio response (i.e. pre-emphasis is inherent in PM systems with no added circuitry).

调频和调相的主要区别是：相位调制有一个6dB/OCT的上升音频响应（也就是，预加重是调相的内在特性，不需要加另外的电路

TEOAE energy distribution takes the average energy of the normal hearing persons as 0 dB, and 5% percentage at single side as the 95% normal value range. TEOAE energy distribution represents the energy loss and is convenient for the comparison to the pure tone audiogram.

TEOAE能量分布图以正常人的平均能量作为0dB，以单侧5％位数作为95％正常值范围，它体现了能量的损失情况，便于与纯音测听的结果相比较。

An on-chip Automatic Gain Control circuit controls the gain of this preamplifier from -15 to 24 dB.

片上自动增益控制电路控制，从这个前置放大器增益-15至24分贝。

If you want to be extra safe, then you should also make a backup copy of your DB .

如果你想成为额外的安全，那么你也应该让您的数据库的备份副本。

Better yet, over the critical midrange between 250 Hz and 2.5 kHz the variation was only +/-2 dB, which would be a remarkable achievement for even a considerably more expensive speaker.

在250到2.5kHZ 的中频测试中，它的偏离度只有＋/－2DB ，通常只有价格极为昂贵的天价音箱才具有这类技术优势。。。。

In this case, we must first accept 14 dB of overall loss below the zero.

在这种情况下，我们先必须接受在零点频率以下的频段全面损失14dB。

If your application needs that set of features, then Berkeley DB is almost certainly the best choice for you.

如果你的应用正好需要的是这样的一套功能的话，那么BDB几乎一定是你的首选对象。

A comparison is made between the performance of harmonic analysis method and that of Blackman window method through the simulated experiments, and in the condition of same order of filters, the stop-band attenuation of filters designed by this method is 5~7 dB more than that of filters designed with Blackman window in the range of different frequencies.

通过仿真实验，把其结果与用Blackman窗函数设计的滤波器的性能进行了比较，在滤波器阶数相同的条件下，在不同频率范围内，该方法比用Blackman窗设计的滤波器的阻带衰减大5~7dB以上，不仅过渡带宽依然变小，而且二者的通带波纹大小相差很小。

HIS announces on this carda noise under operation lower than 20 dB .when u power the system you will be able to note the silence of the card andalso benefit from the bleu light.

他宣布在这个卡噪音下运行低于20分贝。当美国的电力系统，你会能够注意到沉默的卡，也有利于从Bleu指标轻。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。