查询词典 ber

The effect of decision threshold on OCDMA system BER performance is analyzed.

理论分析了接收机判决阈值的选取对OCDMA系统BER性能的影响。

The presented to evaluate considering the expression r of the chromatic dispersion, which will be good for the analysis of the BER.

基于耦合非线性薛定谔方程分析了光CDMA传输系统中光纤色度色散对传输性能的影响，给出了考虑色度色散系数r后光BER的表达式，使得对系统BER的理论分析更加有效。

Compared with the performance of the IEEE 802.16d standard, the IPR method achieves better Complementary Cumulative Distribution Function performance without BER performance degradation almost.

与IEEE 802.16d标准中峰均比性能相比，本文提出的方法能在几乎不损失系统BER性能的情况下，获得良好的互补累积分布函数性能。

MER and BER are digital channel quality tests; C/N tests the quality of analog channels.

MER和BER是数字通道质量检测；C/N测量模拟通道的质量。

During the BPSE process, a high-speed special mode frame is sent, bit error rate is fed back to the sender, as well as signal to noise and BERs for each rate are obtained by looking up the empirical BER/SNR curve. During the SLRA process, the equation of goodput relative to BER and frame length is solved, to obtain the maximized goodput and its related BER and frame length.

SLRA先通过求解有效带宽、BER和包长度的解析方程，然后得到各种速率下的最优有效带宽、及其相应的包长度，从而在理论上优化有效带宽；由于SLRA计算过程非常复杂，我们提出了近似查表的方法来简化优化过程，使得其适用于便携式通信设备。

The intestinal perfusion experiment was performed on rats in vivo to observe the effects of absorption sites and drug concentration on the intestinal absorption characteristics of BER and JAT.

采用大鼠在体肠段回流实验，主要从吸收部位、药物浓度两方面对黄连提取物中BER和JAT的肠段吸收特征进行研究。

Methods TLC-scanning method was adopted for the determination of Ber and Jat in HLD. Ber Jat was made artificially according to the result of the TLC-scanning.

方法采用薄层扫描法测定HLD中Ber和Jat的质量分数，并根据其比值配制模拟方。

There was no significant difference between Ber Jat and Ber. Conclusion It implies that there are some other hypoglycemic ingredients in HLD besides Ber and Jat. Jat has no evident synergistic or antagonistic action when coexisted with Ber in natural ratio.

结论黄连中可能还有除Ber和Jat之外的降血糖成分，以天然成分比例配伍Ber和Jat，未见明显协同或拮抗作用。

In this study, we suggest that BER and MMR repair systems might be the major DNA repair system in oral tissue.

从本研究的结果可推测BER与MMR修复机制可能是口腔中最主要的DNA修复机制。

Ber at doses of 1-4 mg·〓 iv was shown to decrease dose-dependently the spectrum power of delta dominant frequency in cortical area and transfer the dominant freqency from delta to theta rhythm in hippocampus. Under the same conditions, the effects of physostigmine 0.1mg·〓 iv on EEG were similar to Ber.

Ber 〓能浓度依赖性地使清醒兔皮层区EEG持续出现低振幅快波，其主频率功率明显减少，并使海马区EEG出现持续且有规律的θ节律，Ber 〓iv使功率谱中δ、θ、α+β相对功率由对照组的43.1±9.3、28.0±4.0和26.1±6.3分别变为28.3±4.7、48.6±5.8（P.01）和22.6±7.2，海马区主频率从δ段右移至θ段，主频率功率明显减少。

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。