The stream function equations are derived, based on the fluid equations of motion on a revolving S 1 stream surface in centrifugal pump impeller, for indirect boundary element method. The equations are suitable ideal and incompressible fluid flow with rotation or non rotation in absolute coordinate system.

根據(jù)離心泵葉輪S1流面的流體運(yùn)動方程久久久久久网视频，推導(dǎo)了間接邊界元法所需的流函數(shù)方程青青青国产在线精美视频，它適用于不可壓理想流體的絕對流動有旋或無旋流動手机日本黄色电影网站。

The evolution of the hydrodynamic field was cyclic and each cycle may be divided into centrifugal flow stages when the basin subsides and receives deposits, and centripetal flow stage when the basin uplifts and is eroded.

地下水動力場演化具有旋回性福利午夜在线，每個旋回可以分為兩個階段：①盆地沉降接受沉積時期的泥巖壓榨水離心流階段；②盆地抬升剝蝕階段的大氣水下滲向心流階段看av在綫。

An instance was given by means of the numerical solution for the first boundary value inverse problem of Laplace's equation.

將直勻流繞物面作二維無旋不可壓縮定常流動時的流函數(shù)表達(dá)為曲面后亚洲中久久久久久精品国产，利用流函數(shù)曲面控制邊界與流曲線的對應(yīng)關(guān)系，采用拉普拉斯方程第一邊值逆問題的數(shù)值解法精品深夜福利视频无码精品社区，提出了來流為直勻流的流曲線造型方法并給出了實例色五月综合性。

B. In order to further reduce the stopcock of the hoisting force to resist, commonly used methods to reduce cocks in diameter, so plug valves usually rectangular flow channel, this method in reducing the torque plug valves headstock the same time, increases the stopcock of the fluid resistance C.

B。 為了進(jìn)一步減少旋塞閥的啟閉力拒女人与拘性行为视频网站，通常采用減少旋塞直徑的方法亚洲欧美日韩一区二区在线，故旋塞閥通常采用矩形流道，此方法在減少旋塞閥啟閉力矩的同時日韩系列在线精品视频观看，增大了旋塞閥的流體阻力 C。

The digital model of hel icopter main motor downwash flow and missile dynamics was established. The variation of the missile attitude and traject ory under rotor downˉwash flow are analyzed through simulation, the variety curves of them are provided on both cond itions that with or without the control of autopilot.

通過建立直升機(jī)下洗流場數(shù)學(xué)模型和導(dǎo)彈動力學(xué)和運(yùn)動學(xué)模型亚洲欧美黄片日韩，對導(dǎo)彈在旋翼干擾流場下的姿態(tài)和彈道變化進(jìn)行了仿真研究久久精品亚洲精品无码白，給出了在導(dǎo)彈自動駕駛儀啟控或不啟控狀態(tài)下旋翼下洗流干擾對導(dǎo)彈姿態(tài)和彈道影響變化曲線。

But the effect of the conducting tube shape and size on the fiber in the spinning is obvious, and affect the disc swirl spun yarn's quality.

但輸送管道的具體尺寸對紡紗過程中纖維的狀態(tài)有明顯的影響久久影音先锋精品，從而影響著旋流紡的成紗質(zhì)量在线欧美一区二区。

By supporting schemes comparison, considering of characteristics of foundation excavation and geological conditions, arch selfsupporting technology is adopted.That is shallow mining steel grid technology compounding with partial soil nails, anchors and pouring concrete scheme.

通過旋流井支護(hù)方案比選，考慮基坑特點99aaa视频、工程地質(zhì)條件一级a一级s爱片免免费免免高潮，采用拱形自撐技術(shù)，即淺埋暗挖鋼格柵工藝18岁禁止黄色網站、局部加土釘錨桿噴射混凝土支護(hù)方案日韩免费在线视频。

A calculated model for predicting wing download of the tiltrotor in hover and forward flight was given according to the aerodynamic interaction effect of the rotor downwash flow on the wing.

該模型中，旋翼在機(jī)翼處產(chǎn)生的誘導(dǎo)速度以及對機(jī)翼干擾的旋翼尾跡邊界基于Weissinger-L升力面理論和自由尾跡方法計算2020黄色视频，以考慮傾轉(zhuǎn)旋翼槳葉的大負(fù)扭轉(zhuǎn)和尖削帶來的較大三維影響亚洲一区二区三区在线观看视频，機(jī)翼表面流則區(qū)分為弦向流及展向流，以分別計算向下載荷成a人片在线观看。

For swirl combustor, the predicted temperature distribution of DO model were in good agreement with those measured by experiment and were better than those of the SHF model.

對于旋流燃燒室內(nèi)溫度場的模擬預(yù)報也表明三级片在线免费观看网站视频，DO模型的計算結(jié)果和實驗值相吻合久久久久久精品网亚洲，明顯高于用SHF模型計算所得的溫度值。

H.M. Cyclones are a variety of the coal cleaning equipment which has been widely applied to the heavy medium separation.

重介質(zhì)旋流器是當(dāng)前重介質(zhì)選煤中廣泛應(yīng)用的分選設(shè)備毛片影片。