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stream     
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     Study on Algorithms for Measure Indexes of Stream Ciphers and Their Stability
     密码及其稳定性测量指标的算法研究
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     The Expressions of Wnt-1 and Pax-6 in Rostral Migratory Stream of Rat Developing Brain and Their Effects on the Differentiation of SVZa Neural Stem Cells in Vitro
     Wnt-1、Pax-6在大鼠嘴侧NSCs迁移的发育学表达及对SVZa区NSCs体外分化的影响
短句来源
     A Scheme of numerical perdiction of the typhoon movement with the stream function
     用函数作台风移行的数值预报方案
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     A Program for Calculating Quasi-Three-Dimensional Flow in Centrifugal Compressor by Mutual Iterating of S_1,S_2 Stream Surfaces and Its Application
     离心式压气机S_1、S_2面相互迭代准三元动计算程序及其应用
短句来源
     FLOW-FIELD MATRIX SOLUTION FOR DIRECT PROBLEM OF FLOW ALONG S_1 RELATIVE STREAM SURFACE EMPLOYING NON-ORTHOGONAL CURVILINEAR COORDINATES AND CORRESPONDING NON-ORTHOGONAL VELOCITY COMPONENTS
     使用非正交曲线座标与速度分量S_1面正问题场矩阵解
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  水系
     The recovery ratio for soil and stream sediment was 93.6-108.1% and 96.0-106.4%(n = 10) respectively.
     该法成功地用于标准土壤和水系沉积物分析,其回收率和变异系数分别为93.6—108.1%和96.0—106.4%(n=10);
短句来源
     Studies on geochemical background values of rocks(ores),stream sediments in Northwest Hebei show that Pb、As、Sb、Cd、Ba、F、Te、Bi、In、U、Au、Ag、Zn contents are higher than crustal abundance (Clarke),K 2O and Na 2O contents of magmatites are higher than those of granitoid in both China and the World.
     岩 (矿 )石及水系沉积物地球化学背景值研究表明 ,冀西北地区 Pb、As、Sb、Cd、Ba、F、Te、Bi、In、U、Au、Ag、Zn等元素含量高于地壳克拉克值 ,岩浆岩类 K2 O及 Na2 O含量明显高于中国和世界花岗岩化学成分平均值。
短句来源
     Multi-purpose geochemical mapping on the Chengdu Plain indicates soil rich in Hg, Ag, Pb, Cu, Zn, Sb, P, S, Se, C, Sr, Mo, Na 2O and stream sediments rich in P, Hg, S, Zn, Pb, Cu, Mo, N, Cd, Cr and organic matter in Chengdu City Proper.
     成都平原多目标地球化学调查表明 ,成都市区土壤Hg、Ag、Pb、Cu、Zn、Sb、P、S、Se、C、Sr、Mo、Na2 O等 13种元素和河流水系沉积物P、Hg、S、Zn、Pb、Cu、Mo及有机质、N、Cd、Cr等 11种为高含量元素。
短句来源
     Application of MAPGIS on the 1∶50 000 stream sediment survey
     MAPGIS技术在1∶5万水系沉积物测量中的应用
短句来源
     Application of GPS in Stream Sediment Survey of 1:50000
     GPS在1:5万水系沉积物测量中的应用
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  河流
     Multi-purpose geochemical mapping on the Chengdu Plain indicates soil rich in Hg, Ag, Pb, Cu, Zn, Sb, P, S, Se, C, Sr, Mo, Na 2O and stream sediments rich in P, Hg, S, Zn, Pb, Cu, Mo, N, Cd, Cr and organic matter in Chengdu City Proper.
     成都平原多目标地球化学调查表明 ,成都市区土壤Hg、Ag、Pb、Cu、Zn、Sb、P、S、Se、C、Sr、Mo、Na2 O等 13种元素和河流水系沉积物P、Hg、S、Zn、Pb、Cu、Mo及有机质、N、Cd、Cr等 11种为高含量元素。
短句来源
     The cleavage fracture takes place in the grain of Al2O3 , Clesvage steps and stream flows are its main fractograph.
     基体Al_2O_3颗粒发生解理断裂,以解理台阶、河流花样等为主要的断口形貌;
短句来源
     QUAL2E is a flexible and comprehensive stream water quality model.
     QUAL2E是一个灵活通用的综合性河流水质模型。
短句来源
     QUAL2E model was developed by USEPA as a comprehensive stream water quality model.
     QUAL2E模型是美国国家环境保护局(USEPA)推出的一个河流综合水质模型。
短句来源
     From principle that the section should be located in the down stream of outlet, the formula of control section of monitoring of river water quality was suggested as x=0 313 uB 2/Ey . Other suggestion was also given out.
     根据河流的控制断面应设在排放口的下游 ,污染物与河水能较充分混合处的原则 ,提出了河流水质监测控制断面的计算公式 :x =0 313uB2 /Ey ,以及其他有关河流水质监测断面设置中应注意的问题
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  溪流
     The water quality in 4th order stream was influenced by the fertilization, thereinto the concentration of NO_3~--N, TDIN were significantly greater than those of the lower order (1st through 3rd) that in summer (p<0.05).
     4级流主要受农业施肥和耕作活动的影响,其中夏季NO_3~--N浓度、TDIN浓度显著高于低级溪流(1~3级溪流)(p<0.05)。
短句来源
     TN, NO_3-N, NH~+_4-N and TSS retained in the pond reach and estuary reach accounted for more than 50% of those retained in whole stream.
     结果表明 :TN、NO3- N、NH+4 - N和 TSS在溪流中的持留、释放受溪流的河流形态影响 ,水塘型和河口型断面是污染物持留的主要区域 ;
短句来源
     Investigation on the Resource of Freshwater Fishes in Stream of Xinyang
     信阳溪流淡水鱼类资源调查
短句来源
     In_stream wood is defined as dead wood (>10 cm diameter and >1 m length) in the stream channel.
     溪流倒木是指在河流中长度大于1m、直径大于10cm的死木。
短句来源
     The investigation on the kinds of freshwater fishes in stream of Xinyang region showed that 35 species of freshwater fishes were discovered in stream of Xinyang, which belong to 5 orders 12 families and 27 genus. Among them Cypriniformes are 60%, Siuriformes 20%, Perci-formes 14.28 % of the total amount and other orders amounts to 5.72 % .
     对信阳地区溪流中的淡水鱼类进行了调查。 结果发现:淡水鱼类共有5目12科27属35 种,其中鲤形目占60%,鲇形目占20%,鲈形目占14.28%,其余两目占5.72%。
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      stream
    Two-level method for unsteady Navier-Stokes equations in stream function form
          
    Two-level finite element approximation to stream function form of unsteady Navier-Stokes equations is studied.
          
    By using the coding properties and statistic properties of the plaintext, the differential properties of the key stream sequences generated by a nonlinear combined generator were analyzed.
          
    Aimed at three basic services (event-driven, data query and stream query), the paper presents a QoS routing model for multimedia sensor networks.
          
    The primary goal of the approach is to provide a possible solution to solve the two intrinsic problems associated with the current main-stream methods for geomechanics.
          
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    A solution of crystalline ribonuclease was injected intraperitoneally andintravenously into the blood stream of the mouse. A depletion of the ribonucleicacid together with a decrease of the calcium ash was observed in the corticalportion of the liver cell 12 minutes after the injection until recovery of normaldistribution 122 hours later. The possible association of calcium with ribonucleicacid in the cytoplasm constituents of the liver cell is discussed.

    核醣核酸酶结晶体的溶液由腹膜腔或血管注射到活鼠的体内可引肝细胞皮质部分的核醣核酸的分解和钙质的消失。这种作用在注射後12分钟开始到124小时後肝细胞恢复常态。关於在活体肝细胞内核醣核酸和钙结合的可能性予以充分的讨论。

    The synoptic process on 500mb over Asiatic natural synoptic region have been analized for 5 summers. The results are given below:1.The variation of the position and strength of the maximum westerly wind belt at 500mb surface along four meridians 65°E, 105°E, 120°E, 140°E gives a good index in determing the natural synoptic seasons over Eastern Asiatic synoptic natural region. The disappearence of the low latitude westerly wind maximum along 65°E is the first indication of the beginning of Bai-U period. When...

    The synoptic process on 500mb over Asiatic natural synoptic region have been analized for 5 summers. The results are given below:1.The variation of the position and strength of the maximum westerly wind belt at 500mb surface along four meridians 65°E, 105°E, 120°E, 140°E gives a good index in determing the natural synoptic seasons over Eastern Asiatic synoptic natural region. The disappearence of the low latitude westerly wind maximum along 65°E is the first indication of the beginning of Bai-U period. When the westerlies wind maximum belt to the south of 40°N completely disappears along 140°E summer begins. This is accompanied with the filling of the Asiatic main trough over Japan and the Northward shiff of the Pacific subtropical high pressure belt from low latitudes to 30°-40°N. The mean date on which summer begins is nearly on 13th, July. It is also the end of Bai-U over middle Yangtze river. Thence the synoptic process in Bai-U period is the prevailing process before summer season. The precipitation in this period is closely related to the strength of the maximum wind belt i.e. socalled frontal zone.2.When the 600mb maximum westerly wind belt appears again at 30°-40°N along 140°E, begins author. The synoptic process, which associates with it, is the reestablishment of the Asiatic main trough over Japan. And the surface cold continental high comes down to North China from the east of Novaya Zemlya Island. The average time of the arrival of Autumn is nearly on 5th, September. Hence the duration of summer is on the average only 55 days.8. According to the analysis of the time variation of maximum westerlies on 30°-40 °N along each of the four meridians, the westerly maximum generally disappears earlier in west than in east but establishes later in west than in east during autumn. The phenomeanon that the maximum westerly first generates in the east during autumn can hardly be explained by the splitting of the jet stream.4. From the analysis, the prevailing process of the natural summer season largely depends upon the variations in the upper westerlies over Ural region and the west-east relative position of the Pacific subtropical high with respect to the Tibet plateau.

    本文根据1951—1955年五年高空和地面的资料,对夏季过程进行了分析,得到下面几点结果: 1.在东亚地区的四个主要经度带上以65°,120°和140°经度带的500毫巴强西风中心的位置和强度变化,对东亚自然天气季节的划分是最良好的指标。东经65°经度带上南边低纬度强西风的消失是梅雨期开始前的征兆。东经140°经度带上强西风在北纬40°以南消失时是夏季开始的征兆。和它相关联的过程是东亚高空大槽的消失和太平洋副热带高压带北移至30°—40°纬度带间,这个期间平均是在7月13日左右,也是江南梅雨结束的时候。故梅雨是夏季以前的盛行过程,它和500毫巴强西风区或锋区是有密切的联系的。 2.东经140°经度带上500毫巴强西风在北纬30°—40°重现时,是夏季结束秋季开始的征兆,和它相关连的天气过程是在该经度带上高空大槽重新建立,地面大陆冷高压从新地岛东部向东南下达华北地区。这个时间平均是在9月5日左右。故东亚夏季的长度平均仅55日。 3.从500毫巴强西风在各经度带上出现的情况来看,一般是西部比东部消失得早,出现得迟,不如冬季那样先在上游首先建立,在春夏之交这种相反的演变,似非地形的分支可以解释的。 4.在夏季自然天...

    本文根据1951—1955年五年高空和地面的资料,对夏季过程进行了分析,得到下面几点结果: 1.在东亚地区的四个主要经度带上以65°,120°和140°经度带的500毫巴强西风中心的位置和强度变化,对东亚自然天气季节的划分是最良好的指标。东经65°经度带上南边低纬度强西风的消失是梅雨期开始前的征兆。东经140°经度带上强西风在北纬40°以南消失时是夏季开始的征兆。和它相关联的过程是东亚高空大槽的消失和太平洋副热带高压带北移至30°—40°纬度带间,这个期间平均是在7月13日左右,也是江南梅雨结束的时候。故梅雨是夏季以前的盛行过程,它和500毫巴强西风区或锋区是有密切的联系的。 2.东经140°经度带上500毫巴强西风在北纬30°—40°重现时,是夏季结束秋季开始的征兆,和它相关连的天气过程是在该经度带上高空大槽重新建立,地面大陆冷高压从新地岛东部向东南下达华北地区。这个时间平均是在9月5日左右。故东亚夏季的长度平均仅55日。 3.从500毫巴强西风在各经度带上出现的情况来看,一般是西部比东部消失得早,出现得迟,不如冬季那样先在上游首先建立,在春夏之交这种相反的演变,似非地形的分支可以解释的。 4.在夏季自然天气季节所出现的盛行天气过程主要是表现在太平洋副热带高压随上游气压场的不同,及其和?

    Utilizing the latitudinal mean ot upper meridional wind of 1950 given by Buch and Starr and White, mean meridional circulation has been studied. Fig. 1-3 (fig. 1 for whole year, fig. 2 for winter, fig. 3 for summer) reveal three cells: two direct cells in low and high latitudes respectively and one indirect cell in middle latitudes. The average jet stream of 1950 is situated in the middle cell. The yearly average equatorial convergence zone is at about 5°N. From winter to summer all the three cells shift...

    Utilizing the latitudinal mean ot upper meridional wind of 1950 given by Buch and Starr and White, mean meridional circulation has been studied. Fig. 1-3 (fig. 1 for whole year, fig. 2 for winter, fig. 3 for summer) reveal three cells: two direct cells in low and high latitudes respectively and one indirect cell in middle latitudes. The average jet stream of 1950 is situated in the middle cell. The yearly average equatorial convergence zone is at about 5°N. From winter to summer all the three cells shift northward. The Hadley cell of winter hemisphere extends to summer hemisphere. The intensity of these cells seems to be stronger in winter than in summer.Angular momentum balance for the latitudes 10°N-70°N for the year 1950 was also studied, and figure for stream lines for the transfer of angular momentum was constructed (fig. 5). The most interesting feature in this figure is that through the surface separating easterlies and westerlies the stream lines are vertical. Thus it indicates that the angular momentum generated in the easterlies is transported to the westerlies not in horizontal direction, but transported to upper westerlies in low latitudes by vertical motion. Then from there it is tiansfer-ed to middle latitudes. The mechanism of such transfer is as follows: In Hadley cell the upward motion in equatorial region and southern tropics carries more angular momentum due to earth's rotation, while the downward motion in northern tropics and subtropics carries less angular momentum due to earth's rotation. Thus in the mean angular momentum generated in easterlies is transported to upper levels.Finally the mechanism of maintenance of zonal circulation was discussed. The conclusion is this: In middle arid high latitudes gross disturbances are of primary importance while in low latitudes mean meridional circulation is important in maintaining zonal circulation.

    本文利用了Buch和Starr与White所计算的1950年各纬度上空的平均经向风速([V]),绘制了子午面上的平均环流(全年:图1,冬季:图2,夏季:图3),图中显示出三个环型(cell),低纬度和高纬度的两个正环型与中纬度的逆环型。 1950年平均西风急流的位置正好处于中纬度的逆环流之中。全年平均的赤道辐合线位于北纬5°左右。自夏至冬三个环型均向北移,冬季半球Hadley环型伸向夏季半球去。三个环型的强度都是冬季大。 对于1950年北半球10°—70°的角动量平衡也作了分析(图4),并绘制了这个空间中角动量输送流线图(图5),其中应该提出,就是通过东西风的界面流线是铅直的,也就是总的来说,在东风带里产生的角动量不是在水平方向上输送到西风带里去,而是在铅直方向上输送到低纬度的高空西风里去,再由那里在水平方向上送到中高纬度去。 最后对于平均纬圈环流的维持也作了讨论,结论是:在中高纬度大型扰动起着主导作用,在低纬度则平均经圈环流是重要的。

     
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