The commercial CFD software Fluent was used for simalation of aerodynamic charactirestics of some terminal guided munitions in terminal segment under different affack anyle and mach, the variation lav of or lift coeflienct, drag coeflient and roll moment coefficient with flight mach and attacls angle was obtained, The semulation result shows the caculated aerodynarve parameters can be referend to high accuracy firing table for the terminal guided projectile.

文中主要利用商業(yè)CFD軟件Fluent對某型末制導(dǎo)炮彈的末制導(dǎo)段在不同攻角欧美色色干、不同飛行馬赫數(shù)的氣動特性進行了數(shù)值仿真亚洲美女在线视频网，得出了該型末制導(dǎo)炮彈升力系數(shù)、阻力系數(shù)和滾轉(zhuǎn)力矩系數(shù)隨飛行馬赫數(shù)和攻角的變化規(guī)律欧美三级片欧美。結(jié)果表明96在线观视频免费观看，計算所得氣動參數(shù)可以為該末制導(dǎo)炮彈編制高精度射表提供數(shù)據(jù)依據(jù)和參考。

This article selects 2473 experimental data of coal gange light aggregate concrete cubic strength on the spot in Fuxin, calculates their average value, mean—square deviation and coefficient of variation, and makes regression analysis.

本文收集了阜新市煤矸石輕骨料混凝土立方強度的現(xiàn)場試驗數(shù)據(jù)2473個人妻少妇久久中文字幕色偷偷A，統(tǒng)計了它們的平均值黄免费看、均方差和變異系數(shù)外国人美女在线，并進行了回歸分析。

The results showed that genotypic differences of NAE,NUE and NHI obviously existed among these rice germplasms, with maximum coefficient of variation in NHI and minimum in NAE.

結(jié)果表明免费网看免费看黄色A片，水稻NAE福利免费试看、NUE和NHI存在顯著的基因型差異，以NHI為最大和NAE為最小欧美人和牲口杂交在线观看。

It is shown from the study results that (1) SSC has obvious neap-spring and seasonal variations with periods being 14.7 days and 368 days, respectively, on an average, SSC during the spring tide was 2.96 times as much as that during the neap tide, and SSC in winter was twice as much as that in summer;(2) correlation coefficient between daily SSC and tidal range on the same day in a mean neap-spring period of 15 days was 0.86, and correlation coefficients between tidal range and daily SSC with one day and two day lag were 0.99 and 0.93, respectively, which indicates that the effect of tidal range variation on SSC has a one day or two day hysteresis;(3) the monthly mean SSC was negatively correlated with the monthly mean water discharge at the Changjiang River Datong station, especially well with the water discharge with a lag of 19 days.

懸沙濃度具有顯著的大欧美亚洲另类图片、小潮和季節(jié)性變化，變化周期分別為14.7 d和368 d欧美偷窥自拍，平均而言草草影院欧美一区，大潮為小潮的2.96倍，冬季為夏季的2倍欧美日韩综合久久精品A片app；2）平均大看av在綫、小潮半月周期中日懸沙濃度與同日潮差之間的相關(guān)系數(shù)為0.86，與前1日潮差之間的相關(guān)系數(shù)為0.99欧美视频视频二区主播大秀，與前2日潮差之間的相關(guān)系數(shù)為0.93精品深夜福利视频无码精品社区，反映潮差變化對懸沙濃度的影響有1~2d的滯后效應(yīng)；3）月均懸沙濃度與長江大通站的月均流量呈顯著負(fù)相關(guān)欧美性爱视频黄片，尤其與流量滯后19d的相關(guān)性最好女人与拘性行为视频网站。

In the meantime, a new relation between the coefficient of variation for a normal variate and its sample size is achieved, where the probability to make mistake Ⅱ is considered 5 The probability distribution of fatigue strength at given life under large sample size determined by a new method is found to follow the log-normal distribution and normal distribution, and a new method are developed to estimate the characteristic parameters of probability distribution of fatigue strength from the probability distribution of traditional tensile properties.

根據(jù)P-S-N曲線的要求，采用概率統(tǒng)計方法久久精品就只有精品99，導(dǎo)出了考慮犯Ⅱ類錯誤的概率時獲取給定精度P-S-N曲線所需的最少子樣容量九九青草视频，引入了不同方法獲取的P-S-N曲線結(jié)果是否趨同的判別標(biāo)準(zhǔn)，得到了P-S-N曲線的壽命求解法和系數(shù)求解法獲得趨同結(jié)果的條件影音最新资源在线观看。 5）研究了大子樣條件下指定壽命時疲勞強度的概率分布网站色色的，并提出了根據(jù)拉伸性能的分布估算材料疲勞強度概率分布參數(shù)的一種方法。

As detect blemish numerary increases, newer blemish appears on average of rate all be worth increase gradually, updated coefficient of variation is reduced gradually.

隨著檢測到缺陷數(shù)目的增加久久青草视频永久看，更新的缺陷平均出現(xiàn)率的均值逐漸增加亚洲老女人网，更新的變異系數(shù)逐漸減小。

Combining with the National Natural Science Foundation ofChina(No.50478032), following researches were done in this thesis: 1 The variation regularity of the ultimate anti-bending capacity of therectangular-sectioned beam with different corrosion has been obtained through thequalitative analysis of 48 beams (32 corroded beams and 12 comparing beams) withaccelerated corrosion; 2 The conclusion has been obtained that the strain of corroded steel bar andconcrete no longer fit in with the assumption of plane section through the analysis ofthe strain data, the strain relation of steel bar and concrete in the mid-span section ofvariously corroded beams at ultimate has been obtained. Through the building of newgeometric relation, the expression of the height of compressive area in the corrodedbeam with rectangular section has been deduced, and the formula with corrosion rateas the main variable for the anti-bending capacity of the corroded concrete beam hasbeen suggested and verified by experiment.; 3 The influence of steel bar corrosion and the concrete regression to the flexureductility coefficient of the corroded structure component has been analyzed. Based onthe relation of steel bar and concrete at yield and ultimate, the expression for theflexure at yield and ultimate of corroded reinforced concrete beam, and the model forthe calculation of the flexure ductility has been built.

本文結(jié)合國家自然科學(xué)基金項目(50478032)"既有鋼筋混凝土橋梁時變可靠度研究"视频,国产精品，主要進行了以下研究工作： 1通過對48根快速銹蝕鋼筋混凝土矩形截面梁(32根銹蝕梁和12根對比試驗梁)數(shù)據(jù)的定性分析日本爆乳片手机在线播放，得到了不同銹蝕率下，銹蝕鋼筋混凝土矩形截面梁極限抗彎承載力的變化規(guī)律18岁禁止黄色網站； 2通過對應(yīng)變數(shù)據(jù)的分析日韩免费在线视频，論證了銹蝕構(gòu)件鋼筋和混凝土的應(yīng)變不再符合平截面假定的結(jié)論，并通過回歸分析得出了不同銹蝕率的螺紋鋼筋梁和光圓鋼筋梁在極限彎矩作用下2020黄色视频，跨中截面處鋼筋應(yīng)變和鋼筋處混凝土應(yīng)變的關(guān)系，通過構(gòu)造新的幾何關(guān)系日韩亚洲午夜在线影院，得出了銹蝕鋼筋混凝土矩形截面梁計算受壓區(qū)高度的表達式成a人片在线观看，既而得出了以銹蝕率為主要變量的銹蝕鋼筋混凝土矩形截面梁的正截面抗彎計算建議公式，并通過試驗數(shù)據(jù)加以驗證； 3分析了鋼筋銹蝕和混凝土劣化對銹蝕構(gòu)件曲率延性系數(shù)的影響黄色网站38无码，結(jié)合鋼筋屈服和極限彎矩兩種狀態(tài)下鋼筋和混凝土的應(yīng)變關(guān)系毛片影片，分別得到了銹蝕鋼筋混凝土矩形截面梁屈服曲率和極限曲率的計算表達式；既而推導(dǎo)出曲率延性系數(shù)的計算模型人人干97精品。

The experiment accuracy test showed that the coefficient of variation of the positive mixed serum was 5.04%, and the CV of negative mixed serum was 1.10%.

實驗精確度檢測陽性混合血清的變異系數(shù)為5.40%日韩手机自拍无码AV，陰性混合血清變異系數(shù)為1.10%。

The optimum conditions for extraction was proved practicable by condition filtration and orthogonal design with supersonic wave method .The results showed that the optimum conditions for extraction to ultrasonic method is : methanol (φ=40,20ml),and 15℃ for 30 min ,this paper has determined nicotine contents that is 23.50mg/g at absorption peak (λ=262nm) by HPLC with an eluent consisting of methanol –potass Phosphate alleciate (pH=3) with the recovery and coefficient of variation are 101.52% and 0.91%.

通過超聲波提取方法進行條件篩選和正交化實驗黄色网站视频一区二区三区，確定了煙草中尼古丁的最佳提取條件国产亚洲欧美，結(jié)果表明，超聲波最佳條件是：甲醇濃度40%国产黄色三级片在线视频，固液比1：20午夜一级黄色片网站，提取時間30 分鐘，超聲溫度15℃免费a黄色片，用高效液相色譜方法在波長262nm 處測定尼古丁的含量人人精品视频，流動相組成為甲醇：磷酸二氫鉀緩沖溶液=10：90，測得煙草中尼古丁的含量為23.50 mg/g人人超碰人人操，平均回收率為101.52%男人桶爽女人30分钟视频动态图，相對偏差為0.91%。

Results showed that the coefficient of variation of mixing uniformity of 65% Lysine Sulphate in 1, 2.5 and 4% premix was 1.70, 3.99 and 0.07% respectively.

試驗證明www.黄色网，65%賴氨酸在1欧美日精品福利视频一二区、2.5和4%預(yù)混料中的混合均勻度變異系數(shù)分別是1.70、3.99和0.07%能看的狼友网站。