front velocity 中文意思是什麼
front velocity
解釋
波前速度-
A detonation "front" commences to move down the charge at a velocity of the order of 7000 m/s.
一個暴炸「前沿」開始以約7000米秒的速度朝藥包下端移動。 -
Visar - measured wave profiles on the free surface of target were profiles with an initial velocity jump followed by a smoothly - rising front to the peak velocity amplitude, showing that quasi - isentropic loading has been successfully generated
Visar測試得到的是波陣面上升前沿被明顯展寬的準等熵壓縮波，最高的擊靶壓力達到了260gpa 。 -
Owing to complicated earth ' s surface condition such as the steep stratum outcropping of front - zone of mountain or the huge thick gravel stratum ' s overlay and earth ' s surface large undulation, complicated underground geology structure developed extremely such as thrust and overthrust nappe, and violent change of the lateral velocity, etc. in front - zone of mountain there are a series of problems such as serious secondary disturbance and low signal - to - noise ratio in seismic exploration gathering
由於山前帶高陡巖層出露或巨厚礫石層的覆蓋、地表起伏大等復雜的地表條件、逆沖和逆掩推覆等復雜地下地質構造發育、速度橫向變化劇烈等原因，造成了山前帶地震勘探資料採集存在次生干擾嚴重和信噪比低等一系列問題。 -
Generally, tidal bore is wave alignment moving upstream estuary, and its surface will break when the wave alignment is strong, which leads to water roll tracing the source. the velocity, which is between small - disturbed wave velocities before tidal bore happens and the one after tidal bore happens, increases with the ratio of tidal bore height to the water depth in wave front
涌潮一般是向河口上游推進的波列，強度大時，表面破碎，進而發展成溯源推進的水滾，其傳播速度隨涌潮高度與波前水深比值增加，大小介於涌潮前後小擾動波波速之間。 -
Research methods and experimental designs for study of air temperature field and velocity field in front of wildfire head
地表火火頭前方氣流溫度場和速度場的研究方法和實驗設計 -
In the first part, the method of velocity coefficient was used to design a 100mm diameter impeller with five single - arc - cylinder blades, and the method of velocity moment was applied to design the volute " s cross - section. the volute " s cross - section is a rectangle, which was designed as a whole structure with the front shroud of the pump. a special lighting window was designed on the side
在第一部分工作中，設計了一個帶半開式葉輪的微型泵：葉輪外徑100mm 、共5片單圓弧圓柱形葉片；蝸殼採用速度矩法設計，內為矩形斷面，和泵殼前蓋板為一整體、透明結構，側面專門設計一個打光窗口。 -
At the same time, the thickness of target should also be in accord with the impact velocity. experiments of quasi - isentropic loading to 93 w alloys by 93w - ofc - tc4 - a1 - mbz system flier - plate with graded wave impedance were performed on light gas guns. the corrected visar - measured wave profiles were profiles with an initial velocity jump followed by a stepwise - rising front to the peak velocity amplitude, indicating that quasi - isentropic compression energy waves had been successfully generated
在輕氣炮上利用研製的93w - ofc一tc4 . ai一mbz系波阻抗梯度飛片實現了對93w合金（靶材料）的準等嫡壓縮，經修正後的測試波形都是由一個較弱的初始速度跳躍和一段呈階梯狀緩慢上升的波陣面前沿所組成的準等嫡壓縮波。 -
Furthermore, the higher the impact velocity, the smaller the extended wave ' s front while the higher the peak velocity. at the same time, the thickness off target should also be in accord with the impact velocity. finally, experiments of quasi - isentropic loading to aluminum targets with lithium fluoride windows via w - mo - ti - mg system flier - plate with graded wave impedance, having been fabricated by sps, were performed on a two - stage light gas gun
使用sps制備出平行度好、整體緻密的、 w - mo - ti - mg系準連續波阻抗梯度飛片材料，利用二級輕氣炮進行了w - mo - ti - mg系波阻抗梯度飛片材料的準等熵特性的實驗研究，成功實現了對帶窗口材料的al靶板的準等熵壓縮。 -
In this paper, the temperature fields during liquid infiltration extrusion of composites are simulated with the fem, the seepage fields of liquid metal are simulated with the fdm. both the temperature fields and the seepage fields are coupled, the temperature variation curves, infiltration front process curves and velocity variation curves with time are obtained
本文採用有限元法模擬了液態浸滲擠壓復合材料浸滲過程溫度場，採用有限差分法模擬了液態金屬滲流場，將兩者間接耦合分析計算，得到了浸滲區域的溫度變化曲線、浸滲前沿及浸滲速度隨時間變化等曲線。 -
The frontal cross - sectional area, the velocity of the swimmer, the wetted surface area of the swimmer, the density of the fluid, and the coefficient of drag will all be the same whether the body is on the front or side
身體前部分的橫截面面積，運動員的速度，運動員的觸水面積，液體的密度以及拖曳系數都是一樣的而無論身體是朝向一邊或前傾。 -
The corrected visar - measured wave profiles on the interface between target and window were profiles with an initial velocity jump followed by a stepwise - rising front to the peak velocity amplitude, indicating that quasi - isentropic compression energy waves had been successfully generated
對visar測試到的波形進行合理的修正後，得到的界面速度波形都是由一個較弱的初始速度跳躍和一段緩慢上升的波陣面前沿所組成的準等熵壓縮波。 -
The results showed that quasi - isentropic compression energy waves were produced after the impact with mg - face of the flier - plate, whose initial velocity jump, peak velocity and front ' s rise - time were all different from the general shock loading wave profiles
結果表明，梯度飛片正向擊靶后產生的是波陣面明顯被展寬的準等熵壓縮波，準等熵壓縮波的初始速度跳躍、速度峰值和波陣面前沿的上升時間都呈現出不同於傳統沖擊波陡峭上升波形的特徵。 -
There will appear a very uneven flow field, and appear a very big velocity magnitude distribution and ash concentration distribution near back wall. thus, the velocity magnitude is far bigger than that of optimal design velocity magnitude, which will lead to serious wear and tear in metal face of heater. especially, because of curve structure in front of heat pipe air preheater, there is more serious wear and tear
由於靠近豎井后墻面的煙氣流速很大，飛灰濃度也較大，斷面速度分佈的最大速度大於最佳設計速度的2 - 3倍，這樣將造成受熱面的嚴重磨損，特別是熱管空氣預熱器前端煙道的幾何結構有一定的轉角，更增加了磨損的程度。 -
A mathematical model of flows in the substrate was established using the equivalent continuum approach, and multi - dimensional numerical simulation of the steady flows in the catalytic converters was performed. simulation results show that the separation and vortex, which cause the pressure loss and the velocity non - uniformity at the front of the first substrate, are generated near the wall of the conical pipe. in addition, the larger the inlet cones angle the more the pressure loss and maldistribution in converters, however, when the angle enlarges enough the pressure loss would be decrease
結果顯示氣流在擴張圓錐管壁附近出現分離產生較強的擾動，造成局部流動損失和載體前氣流速度沿徑向分佈不均勻；入口擴張管結構對催化器的流動特性有很大影響，但並非擴張角越大，催化器流速武漢理工大學碩士學位論文分佈的不均勻性和壓力損失也增大，而是存在著一個最佳角度，但當擴張角增大到一定程度以後，擴張角對流速分佈和壓力損失的影響變小。 -
They pointed out that modulation wave fronts ( such as those in the front of a light pulse ) in a negative index material are aligned the same way as they are in a positive index material ? anything else would violate basic causality and require parts of the wave to travel with infinite velocity
他們指出在負折射率材料中調制波前（例如光脈沖前端的波前）的方向，與在正折射率材料中相同；若非如此，就會違反基本因果律，且部份波的前進速度將成為無限大。 -
Groove shape function of laser power, scanning velocity and materials ' thermo physical coefficients was solved due to temperature at ablation front keeping decomposed temperature, and the proposed model was tested in polymethylmethacrylate experiment
基於燒蝕面上的溫度始終保持為降解溫度，求出關于激光功率、掃描速度和材料熱物理系數的微流道外形函數解，並用聚甲基丙烯酸甲酯進行了實驗驗證。 -
A transverse secondary circulation is produced by the coupling of high and low jets, while the sinking branch of the secondary circulation providing the dynamic conditions for the dry intrusion air. during the period of the heavy rain process, dry intrusion descends southward along the intense constant potential temperature lines, which promotes the lower cyclone. in addition, the pouring of upper - level dry air not only decreases ground temperature behind the front but also increases surface pressure and velocity
由於高、低空急流耦合，在高空急流中心左側產生的下沉運動和高空急流中心右側、低空急流左側產生的上升運動在鋒面上形成一次級環流，次級環流的下沉支運動為對流層高層干空氣和高位渦的下傳提供了動力條件；進一步研究發現，干侵入沿相當位溫密集帶向南向下伸展，引起對流層低層氣旋性渦度的發展；此外，高層乾冷空氣向下注入，導致地面溫度降低、氣壓升高、風速加大、低層輻合增強、上升速度加大，從而促進了新的對流運動，引起降水增強。 -
The results showed that quasi - isentropic compression energy waves were produced after the impact, whose initial velocity jump, peak velocity and front ' s rise - time were all different from the general shock loading wave profiles. furthermore, the higher the impact velocity, the smaller the extended wave ' s front while the higher the peak velocity
結果表明，梯度飛片擊靶后產生的是波陣面明顯被展寬的準等熵壓縮波，準等熵壓縮波的初始速度跳躍、速度峰值和波陣面前沿的上升時間都呈現出不同於傳統沖擊波陡峭上升波形的特徵。 -
Velocity of propagation of wave front
波前傳播速度 -
Velocity of wave front
波前速度
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