查询词典 db

The 46 ears classify into three groups on the basis of hearing threshold level,and classified into four groups on the basis of different disorders.Results The amplitude and reproducilbiity decreased as the hearing loss increased.

选择经耳镜检查、纯音听阈及声导抗测试确诊为中耳病变，纯音气导听阈不超过30 dB HL的46只病变耳及对照组正常28耳进行TEOAE测试，病变46耳分别按不同听阈水平及不同病变分组，并对其结果进行分析比较。

Experimental data show that when attenuation of waveguide is on the order of 0.1 db, the random error is about 1.5%, and the total error is more than 10%....

文中提出了选定线路元件参数以保证所需测量准确度的建议，实验证明这样的选择是恰当的。此外，还利用标准片移式衰减器作了总体验证。

The rolloff is usually expressed as attenuation per unit interval, such as6 dB per octave.

衰减截止频率通常被表示为单位音程的衰减，比如每一个八度降低6分贝。

The voltage gain can be set from unity to 26 dB using a single external gain resistor.

电压增益可以设置为从统一到26分贝使用一个外部增益电阻器。

If an amplifier has a 30 dB voltage gain, what voltage ratio does gain represent?

如果一个放大器的电压增益为30分贝，则它所表示的电压比是多少？

The watermark can be detected with zero error probability even if the quality of watermarked image is as poor as 26 dB in PSNR after corrupted by additive Gaussian noise.

传统的加密系统在数据传输过程中虽有保护作用，但数据一旦被接收并解密，其保护作用也随着消失。因此只能满足有限的要求[1，2 ] 。作为数字媒体版权保护的有效手段[3 ，4 ] ，数

High-quality antral slow-wave recordings were achieved in the intraoperative human trial (amplitude, 0.41 +/- 0.04 mV; SNR, 12.6 dB), and an activation map was constructed showing normal aboral slow-wave propagation at a velocity of 6.3 +/- 0.9 mm/s.

在腹腔镜胆囊切除术中测量试验中，我们获得了高质量的胃窦部慢波电位记录结果（振幅0.41±0.04mV，SNR 12.6分贝），并且显示出正常慢波的离口传播速度为6.3±0.9mm/s。

O ^ / I anthomaniac called loudly to her computer, I think, if someone is, I believe that they will be my 1000 db of noise shock The.

o^/我花痴地对着电脑大声叫，我想，要是有人在，我相信，他们一定会被我1000分贝的噪音所震撼的。

They are ApplicationLayer+DB , ClientLayeH-ApplicationLayer and 3 Layers.Parts of a practical system? Resident Management Information System designment are given. IDCard Management % Approvement Management % Query Module are modued with UML and designed by modues brought forward. Some problems ecountered in system designment are analyzed and discussed and then above theories analyses are strengthened and unproved.

结合一个实际应用系统——常住人口信息系统，针对本人负责的部分子系统：身份证管理、审批管理、查询部分模块，使用UML对各子系统建模、选择应用层结构设计应用层、选择数据约束设计模式设计数据约束，使得上述技术应用到实践当中，并结合系统中出现的各种问题进行分析、探讨，提高、深化了前面的理论分析、设计。

The experiments show that the proposed image compression and denoising method can significantly outperform those that are based on Bandelet or Contourlet transform in visual quality for the images with abundant edges and texture, and the peak signal to noise ratio is also increased by more than 0.1 dB.

实验结果表明，对于纹理和边缘丰富的图像，所提出的图像压缩和去噪方法在视觉质量上明显优于基于Bandelet或Contourlet变换的方法，峰值信噪比也提高了0.1dB以上。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。