db的例句大全

Utilizing rectangular approximate in 3 dB fused-tapered optical fiber coupler coupling ratio is analyzed theoretically.

利用矩形近似理论对用熔锥法制作的耦合器分光比进行了分析.

网络文摘精选

Microwave properties ofthese devices are P ( 1 dB ) & gt ; 4 W , G ( 1 dw ) 6.5-7.5 dB and n ( add ) & gt ; 35 %.

在5.3GHZ下,器件 1dB 压缩点的输出功率 ≥4W,增益为6.5～7.5dB,功率附加效率 ≥35%.

互联网摘选

Then taking the Web DB of School of Communication and Information Science as an example, this paper briefly discusses the way to build a Web DB using ASP technology.

接着，以武汉大学传播与信息学院网页数据库的设计与实现为例，详细介绍如何通过利用ASP技术，快速、方便地创建良好的人机交互界面和开发稳定、快捷的后端服务平台的过程。

互联网摘选

A Variable high power directional coupler for S band is described in this paper. The coupler consists of two 3 dB couplers mounted in cascade and a phase shifter. inserted between the connecting legs of the 3 dB couplers.

文章介绍了由两个3dB耦合器串联，并在其中两个输出支路插入移相器所组成的S波段高功率可变定向耦合器。

互联网摘选

Error Analysis on Antenna Gain Measurement with 3 dB and 10 dB Bandwidth Method

3dB和10dB带宽法测量天线增益的误差分析

互联网摘选

Results All cases were operated successfully. 78 cases ( 132 ears) were followed up with 7~ 12 months. These cases hearing were improved significantly, pure tone threshold average was 21.6 dB and audibility threshold elevated 28 dB averagely.

结果所有置管均一次完成，术后7～12个月复查78例（132耳），疗效显著，纯音测听平均为21.6dB，听阈平均提高28dB。

互联网摘选

The 3 db Bandwidth is 30±5 MHz . The stop-band attenuation ( f _ 0±100 MHz ) is over 35 db except individual frequency points.

三分贝带宽为30±5MHz,阻带衰减 ( f_0±100HHz ) 除个别频率点外,其余都在35db以上.

互联网摘选

The gain variation of ± 3 dB in an EDFA is reduced to ± 0.3 dB over a bandwidth of 30 nm and the total extra insertion loss of the device is less then 0.3 dB.

该器件使掺铒光纤放大器在30nm带宽上的增益谱波动从±3dB减小为±0.3dB，器件的附加损耗小于0.3dB。

互联网摘选

But DB still dominates the long-distance and inter-city traffic.

但是德国铁路股份公司依旧掌控者长途和城际交通.

互联网摘选

Nominal cooling capacity conditions : chilled water in 12℃, out 7℃; entering air DB 35℃ , WB 24℃.

冷量 系依据冰水入口温度12℃, 出口温度7℃; 入口空气干球温度35℃, 湿球温度24℃计算得出.

互联网摘选

Nominal cooling capacity conditions : chilled water in 12℃, out 7℃; entering DB 35℃, WB 24℃.

冷量是依据冰水入口温度12℃, 出口温度7℃; 环境干球球温度35℃, 湿球温度24℃计算得出.

互联网摘选

A 30 dB gain CMOS VGA is designed using a 0.25 μ m CMOS process.

采用0.25μmCMOS工艺设计了一种增益动态范围为30dB的可变增益放大器.

互联网摘选

So the traditional Relational DB theory is not suitable for dealing with them.

在发展中,搜索引擎的目标是能像传统的数据库一样提供方便有效的功能.

网络文摘精选

DB 2 is a relational database management system that developed by IBM.

DB2通用数据库是IBM公司 开发推广的关系数据库管理系统产品.

网络文摘精选

The rolloff is usually expressed as attenuation per unit interval, such as 6 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.

网络文摘精选

The following example copies the selected rows in a db a list box.

查出你选择的行,然后用一个循环插入.

网络文摘精选

Result: The upper confidence interval [ 29.9 dB, 40.0 dB ]; the Lower confidence interval [ 12.5 dB, 16.5 dB ].

结果: 上限置信区间为 [ 29.9dB, 40.0dB ], 下限置信区间为 [ 12.5dB, 16.5dB ].

互联网摘选

Grade 3 plaque near 100 dB, ratio to blood 22, approximate to vessel wall.

队舶逜D达 103.44±38.71dB,是血液的22倍, 接近于管壁外膜的回声强度.

互联网摘选

DB: I could stop the car, pull hand brake.

分贝: 我可以停止汽车, 拉手煞车.

互联网摘选

IDE and use the built-in JAVA DB database information storage systems.

并采用该IDE自带的JAVADB数据库存储系统信息.

互联网摘选