Weston cadmium cell
- Weston cadmium cell的基本解释
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韦斯顿镉电池
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Products to sponge cadmium, cadmium oxide, cadmium nitrate, sulphate cadmium, nickel foam, metal cadmium powder as the main products of the coexistence of a variety of operations, monthly production reached: 200 tons of cadmium oxide, cadmium off more than 50 tons, cadmium powder 30 Tons, 300 tons of nitric acid cadmium, nickel foam 12,000 square meters, and so on, the annual turnover to reach 36 million.
产品以海绵镉、氧化镉、硝酸镉、硫酸镉、发泡镍、金属镉粉为主要产品的多种经营方式并存,月产量达到:氧化镉200吨、海面镉50多吨、镉粉30多吨、硝酸镉300吨、发泡镍12000平方米等等,年营业以达到3600万。
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The results show that 42.86% topsoil samples are polluted by Cadmium, soil synthesis pollution index is moderate, Cadmium pollution degree of topsoil correlate with the environment of sampling sites. The results also show that exchangeable Cd, carbonate-bound Cd, organic-bound Cd and residual Cd are found in all soil samples except for Fe-Mn oxide-bound Cd. Furthermore, the concentration of exchangeable Cd and carbonate-bound Cd, both which have high biological validity, is high. Humus has a certain correlation with exchangeable Cd, organic-bound Cd and residual Cd, and has no obvious correlation with other chemical speciations. Any chemical speciation of Cd has no obvious correlation with pH and total Fe of soil samples. Cadmium in topsoil can be eluviated by acid solution, the quantity of Cadmium eluviated by redistilled water is little. With the rise of pH of eluviating solution, eluviated Cadmium quantity decrease. For the same soil sample, the lower pH value of eluviating solution is, the more fast the Cadmium is eluviated, and the more thequantity of Cadmium is eluviated.
研究结果表明:成都市表生土壤样中有42.86%受镉污染,镉综合污染水平达中度污染,成都市表生土壤镉污染程度与采样点周围环境表现出一定的相关性;除铁锰氧化物结合态镉在部分土壤样中未检出外,所有土壤样均含有可交换态镉、碳酸盐结合态镉、有机结合态镉、残留态镉,且生物有效性较高的可交换态镉和碳酸盐结合态镉占总镉量比例较高;成都市表生土壤中的腐殖质与可交换态镉、有机结合态镉、残留态镉有一定相关性,与碳酸盐结合态镉、铁锰氧化物结合态镉相关性不显著;各形态镉与土壤pH值和全铁的相关性均不显著;土壤中的镉可被酸溶液淋出,重蒸馏水淋出镉量十分微小;随着淋滤液pH值的升高,土壤样的镉淋出量下降,且0~5小时时段的镉淋出量占镉总淋出量比例下降,5~30小时时段的镉淋出量占镉总淋出量的比例上升,对同一土壤样而言,酸度大的淋滤液比酸度小的淋滤液淋出镉速度更快,淋出镉量更大。
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Due to the complexity of the cell jitter, the NonSynchronous Tining Recovery methods are currently not mature With the emphasis being given to the Class A CBR traffic, this paper analyzes the performance of the queueing delay and cell jitter at the source node and intermediate nodes, and discusses the Source Timing Recovery at the destination node in ATM networks Firstly, this paper presents a description of the cell jitter of CBR traffic, and gives the definitions of two kinds of cell jitter regarding the Source Timing Recovery for CBR traffic Then, by using exact mathematical models and analysis methods, this paper analyzes the impact of the factors, such as the capacity of the queueing buffer, the randomness, the deterministic nature and the correlation in cell arrivals of the background traffic sources, on the queueing delay and cell jitter performance of the CBR traffic through Statistical Multiplexitng To obtain an insight into the power spectral distribution and look for better schemes for the depression and filtering of the cell jitter, within the analyses we succeed deriving the power spectrum of the cell jitter for CBR traffic Hence, not only the power spectral distribution of the cell jitter can in the frequency domain be qualitatively understood, but also can the rms (root-meansquare) value of the cell jitter be quantitatively obtained so as to more accurately measure the amplitude of the jitter In the end-to-end performance analysis of the queueing delay and cell jitter, we propose a kind of quasi-periodic cell stream model to characterize the jittered CBR traffic, and present an initial queueing analysis of the CBR traffic following such a model at a generic intermediate node Additionally, we briefly discuss the buildout/playout and Source Timing Recovery functions of the destination node Finally, regarding the Source Timing Recovery of CBR traffic, this paper systematically discusses several important principles of the cell jitter filtering and depression reported in the literature, introduces several implementation schemes of the Source Timing Recovery e.
由于信元抖动的复杂性,非同步定时恢复方法目前还很不成熟。本文针对A类CBR业务流在ATM网络源节点和中间节点的排队时延和信元抖动性能,以及在目的节点的源定时恢复问题作了较为全面的研究。首先,文中描述了CBR业务流的信元抖动,并具体地给出了两种与CBR业务源定时恢复有关的信元抖动的定义。然后,采用了精确的数学模型和分析方法,有针对性地分析了业务背景中信元到达的纯随机性、确定性和相关性以及排队缓存器容量等因素对CBR业务流经过统计复用后的排队时延和信元抖动性能的影响。为了了解信元抖动的功率频谱分布和寻求更好的抑制和滤除抖动的方法,在性能分析中,我们成功地完成了CBR业务流信元抖动的功率谱分析,使得不但可以从频域定性地认识信元抖动的能量分布特性,而且还可以定量地求出信元抖动的均方根值(rms:root-mean-square),以更为准确地衡量抖动的大小。在CBR业务流的多节点端-端排队时延和信元抖动性能分析中,我们提出了一种准周期性(quasi-periodic)信元流模型来描述感染了信元抖动的CBR业务流,并基于这一模型进行了CBR业务流中间节点的初步排队分析。
- 更多网络解释 与Weston cadmium cell相关的网络解释 [注:此内容来源于网络,仅供参考]
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Weston cadmium cell:韦斯顿镉电池
weightlessness 無重狀態,失重 | Weston cadmium cell 韋斯頓鎘電池 | Wheatstone bridge 惠斯登電橋
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weston standard cadmium cell:韦斯顿标准镉电池
wellington boot 防水长统靴 | weston standard cadmium cell 韦斯顿标准镉电池 | weston standard cell 韦斯顿标准电池