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干扰比
相关语句
  interference ratio
     The Calculation of Carrier to Interference Ratio(CIR) in Indoor Communication System
     室内移动通信中的载波干扰比(CIR)计算
短句来源
     In MIMO cellular mobile communication systems, CCI (Co-Channel Interference) affects the performance greatly. The thesis proposes a CPC (Centralized Power Control) approach to control the CCI and by so to improve the SIR (Signal to Interference Ratio) outage performance and BER performance. The PAPC approach adjusts each user's total transmit power but keeps queal power levels among antennas of each user.
     在蜂窝MIMO移动通信系统中,同信道(CCI)干扰严重恶化了系统性能,论文提出了一种蜂窝MIMO系统中的集中式功率控制(CPC)方法,能够抑制CCI,提高系统的信号干扰比(SIR)中断性能和BER性能。
短句来源
     Compared with conventional power control method utilizing carrier to interference ratio, the simulation results show that it can achieve lower bit error ratio and higher channel capacity.
     模拟结果表明 ,该方法比一般的载波干扰比功率控制方法性能更优 ,可获得更低的误码率和更高的信道容量
短句来源
     We first adopt an interference-limited model and signal interference ratio (BER) instead of the simple two-state model and congestion Q, and then we compare the BER performance of the Bluetooth that uses AFH with that of the Bluetooth without it.
     首先采用有限干扰模型代替简单的双状态干扰模型,以信号-干扰比代替拥塞系数Q,再以传输DM1包为例比较采用自适应跳频技术前后的系统误码率。
短句来源
     The phase noise can also cause the inter sub-carrier interference(ICI),the effects of phase noise were analyzed in OFDM systems with or without the ICI self-cancellation scheme ,derived the approximate calculation formula of carrier to interference ratio(CIR) and signal noise ratio(SNR) and the BER performance was also simulated on AWGN channel.
     相位噪声也能引起信道间干扰( ICI) ,本文系统的分析了采用ICI自消除方案前后相位噪声对OFDM系统的影响,得出了载波干扰比和信噪比的近似计算公式,在AWGN信道上仿真了系统的误码性能。
短句来源
  “干扰比”译为未确定词的双语例句
     An easy pre-coding scheme with rate 1/2 can reduce this sensitivity to frequency offset and compress the inter-carrier interference.
     一种简单的1/2码率的预编码方案可以有效地抑制载波间干扰(Inter-Carrier Interference,ICI),提高载波干扰比(Carrier-to-Interference Ratio,CIR)。
短句来源
     2. the linear strain suffers much higher air-pressure interference than the differential strain;
     2.线应变受气压干扰比差应变高得多。
短句来源
     The compounded disinfectants(1∶2,1∶3,1∶4) could rapidly destroy HBsAg in suspension with 30sec and the influencing degree of organic substance was lower relatively than EOW(P<0.01).
     500 mg/L三氯异氰尿酸与2%戊二醛体积比为1∶2、1∶3、1∶4的复方消毒液杀灭效果最好,血清干扰比EOW相对较小。
短句来源
     Landscape fragment was closely related to disturbance degree,and stronger disturbance result in higher landscape fragment indexes.
     景观破碎度分别为 0 .0 82 0、0 .0 746和 0 .0 0 0 7.重度干扰和中度干扰比轻度干扰下景观具有明显高的斑块密度指数和破碎化指数 .
短句来源
     Matrix interferences in electrothermal vaporization combined with ICP-AES (ETV-ICP-AES) were studied. It was found that perchloric acid and chlorides, which severely cause signal depressions in GFAAS,but enchanced the signals or had no interferences in ETV-ICP-AES.
     本文研究了电热蒸发电感耦合等离子体原子发射光谱(ETV-ICP-AES)中氯化物、高氯酸等产生的干扰,并且与无火焰石墨炉原子吸收(GFAAS)中这些基体的干扰作了比较,认为ETV-ICP-AES的干扰比GFAAS干扰小。
短句来源
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  相似匹配句对
     Analysis of signal-to-noise ratio for irregular interference.
     非规则干扰信噪分析
短句来源
     the effect of interference is better in nearer and higher situation.
     高度高的低的干扰效果好。
短句来源
     The RNA interference
     核糖核酸干扰
短句来源
     RNA interference
     RNA干扰
短句来源
     In this paper,the writer proves the existence theorem of Nash-Mequilibrium points under the weaker conditions than D.
     本文在 D.
短句来源
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  interference ratio
Values of the signal-to-interference ratio attained in the course of two-stage spectral analysis are compared with the corresponding values attained in the course of classical cross-correlation processing.
      
Balance power control is based on the idea of balancing Carrier to Interference Ratio (CIR) of all wireless links.
      
Signal-to-Interference Ratio(SIR) is a very important metric of communication link quality.
      
This can guarantee the received Carrier-to-Interference ratio (C/I) of each subcarrier to be acceptable as required by system planning.
      
The shifting value formulas are presented to obtain the best SNR when there is no interfering signal and to acquire the highest Signal to Interference Ratio (SIR) as there is one interfering signal.
      
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A method of spectrophotometric determination of thorium(Ⅳ)in thorianite sand with 5-Br-PADAP is described.The determination is carried out at pH 4.0 in chloroacetic acid-sodium chloracetate buffer solution,triton X-100 is used as solubilizing agent.Under the experimental conditions employed,the molar absorptivity of a reddish brown complex of thorium(Ⅳ)at 580 nm is found to be 5.2× 10~5 l·mol~(-1)·cm~(-1); Beer's law is obeyed for 0~20 ug of thorium(Ⅳ)in 25 ml of solution.The present method is comparately simple...

A method of spectrophotometric determination of thorium(Ⅳ)in thorianite sand with 5-Br-PADAP is described.The determination is carried out at pH 4.0 in chloroacetic acid-sodium chloracetate buffer solution,triton X-100 is used as solubilizing agent.Under the experimental conditions employed,the molar absorptivity of a reddish brown complex of thorium(Ⅳ)at 580 nm is found to be 5.2× 10~5 l·mol~(-1)·cm~(-1); Beer's law is obeyed for 0~20 ug of thorium(Ⅳ)in 25 ml of solution.The present method is comparately simple and sensitive.Satisfactory results can be obtained in the determi nations of thorium(Ⅳ)in thorianite sand.

方钍石是钍来源的重要含钍矿物。目前测定钍的含量的方法较多,虽有用5-Br-PADAP测定钍的方法的报导,但未见有在triton X-100存在下,用5-Br-PADAP直接测定方钍石中钍的含量的报导。Triton X-100的存在,使测定的酸度增加,从而增加干扰元素的干扰比;并且增加了络合物的稳定时间。本文采用5-Br-PADAP作显色剂,在氯乙酸-氯乙酸钠缓冲体系中用triton X-100表面活性剂胶束增溶分光光度测定方钍石(人工样品)中钍的含量,获得较满意的结果。在25毫升中,钍的比耳定律范围在0~20微克,摩尔吸光系数为5.2×10~4升·摩尔~(-1)·厘米~(-1),Sandell灵敏度为0.0045微克钍(IV)/厘米~2。我们对两种含量的方钍石人工样品进行了测试,结果良好,回收率在97.3~101.4%之间,此方法可靠,精密度较高,误差符合微量组分的测定要求,我们对样品测定结果表示满意。

A method of spectrophotometric determination of thorium (IV) in thorianite sand with 5-Br-PADAP is described. The determination is carried out at pH 4.0 in chloroacetic acid-sodium chloracetate buffer solution, triton X-100 is used as solubilizing agent. Under the experimental conditions employed, the molar absorp- tivity of a reddish brown complex of thorium (IV) at 580 nm is found to be 5.2x 10~5 l·mol~(-1)·cm~(-1); Beer's law is obeyed for 0~20 ug of thorium (IV) in 25 ml of solution. The present method...

A method of spectrophotometric determination of thorium (IV) in thorianite sand with 5-Br-PADAP is described. The determination is carried out at pH 4.0 in chloroacetic acid-sodium chloracetate buffer solution, triton X-100 is used as solubilizing agent. Under the experimental conditions employed, the molar absorp- tivity of a reddish brown complex of thorium (IV) at 580 nm is found to be 5.2x 10~5 l·mol~(-1)·cm~(-1); Beer's law is obeyed for 0~20 ug of thorium (IV) in 25 ml of solution. The present method is comparately simple and sensitive. Satisfactory results can be obtained in the determi nations of thorium (IV) in thorianite sand.

方钍石是钍来源的重要含钍矿物。目前测定钍的含量的方法较多,虽有用5-Br-PADAP测定钍的方法的报导,但未见有在triton X-100存在下,用5-Br~PADAP直接测定方钍石中钍的含量的报导。Triton X-100的存在,使测定的酸度增加,从而增加干扰元素的干扰比;并且增加了络合物的稳定时间。本文采用5-Br-PADAP作显色剂,在氯乙酸-氯乙酸钠缓冲体系中用triton X-100表面活性剂胶束增溶分光光度测定方钍石(人工样品)中钍的含量,获得较满意的结果。在25毫升中,钍的比耳定律范围在0~20微克,摩尔吸光系数为5.2×10~4升·摩尔~(-1)。厘米~(-1),Sandell灵敏度为0.0045微克钍(IV)/厘米~2。我们对两种含量的方钍石人工样品进行了测试,结果良好,回收率在97.3~101.4%之间,此方法可靠,精密度较高,误差符合微量组分的测定要求,我们对样品测定结果表示满意。

Three sample feeding devices, namely FIA, peristaltic pump and pnuematic uptake have been used to examine their effects on the matrix interferences in ICP-AES. The acid mediumsselected were HC1, HNO_3,H_2 SO_4, H_3PO_4 and HCLO_4, and the tested elements were Ca, Co,Ni and Cu. The nesults showed that the FIA device could alleviate the acid effecte most effic-iently. However, the effects of PO_4~(3-), Al and Na matrices on Ca could not be alleviated by anyof the above mentioned devices. The mechanisms of these...

Three sample feeding devices, namely FIA, peristaltic pump and pnuematic uptake have been used to examine their effects on the matrix interferences in ICP-AES. The acid mediumsselected were HC1, HNO_3,H_2 SO_4, H_3PO_4 and HCLO_4, and the tested elements were Ca, Co,Ni and Cu. The nesults showed that the FIA device could alleviate the acid effecte most effic-iently. However, the effects of PO_4~(3-), Al and Na matrices on Ca could not be alleviated by anyof the above mentioned devices. The mechanisms of these effects are discussed.

本文介绍了ICP-AES中基体干扰的研究工作,主要是通过比较流动注射、蠕动泵、气动提升三种进样方法的酸效应和化学干扰的特点和程度,发现蠕动泵进样法的酸效应仍相当严重,流动注射进样法的酸效应干扰比蠕动泵进样法轻得多。另方面,三种进样法的化学干扰特点很相似。由此结果对ICP-AES中基体干扰的机理作了初步探讨,并得到了一些新结论。

 
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