annular area 中文意思是什麼
annular area
解釋
環形區域-
Designning well tube and drill - hole diameter in order to increase thickness of both annular packing gravel and water - resisting clay, nylon net packing around well tube filters, designing filter layer on the boundary between packing gravel and water - resisting clay and ramming the gravel by working the piston into the well after gravel packing completion and the filling clay for salt - water resisting etc. we succeeded in constructing 3 drinking - water wells in minqin county, proved the affectivity and feasibility of using it and giving a certain technical demonstration of construction of drinking - water well in the same similar to this area
通過孔徑與管徑的調配設計，增大環狀粒料層和止水粘土層的厚度；濾水管外包尼龍紗網；粒料與止水粘土接觸界面上設計反濾層；填粒后先行拉活塞利用水力夯實粒料層，再投粘土球止掉上部鹹水等措施，在民勤縣三口人飲水井施工中取得顯著效果，證明了該套成井工藝的有效性和可行性，有望為同類地區人飲水井施工提供技術示範作用。 -
Results the inner annular structure ( body ) is for exploration of oil, gas and coal ; the border of inner annular structure ( body ) for exploration of uranium ; middle annular structure ( body ) for exploration of coal and uranium because coal - bearing formation and uranium - riching formation outcrop in this area
結果內環體是南油北氣、煤集中分佈區和有利勘探區，內環體邊緣是砂巖型鈾礦分佈區和有利勘探區，中環弧帶是含煤地層和砂巖型軸成礦層出露區和勘探區。 -
( 5 ) as torsion is increased, the anticlockwise secondary vortexes and the negative area of the stream function increase ; the axial velocity moves anticlockwise ( annular pipe ) or clockwise ( circular pipe ) ; the friction factor ratio finally reaches the value about 1
（ 5 ）增大撓率，逆時針方向旋轉的一二次渦和流函數的負值區域增大，軸向速度最大值的位置按逆時針（環形截面）或順時針（圓截面）方向旋轉，摩擦系數比最終趨向於1 。 -
Relaxation factors are adopted. a program is produced to simulate swirling air flow in a horizontal straight pipe and compare with experiment data. the simulation prove that the modified k - model can predict the core, annular and wall regions near entrance and axial velocity far from entrance, but it ca n ' t predict tangential velocity well in weak swirling area far from entrance
編程計算水平圓管內螺旋氣流的流動參數並與實驗數據對比，結果表明修正-湍流模型在近入口處基本上能預測出中心區、環形區和近壁區的流動特性，在遠離入口弱旋流區域對軸向速度的預測符合實際情況，但是出現對周向速度修正過大的現象。 -
The prototyping quality made by annular scanning is far better than this of grating scanning. one kind of new sub - area solution that is based on annular scanning is proposed. the arithmetic of this solution is so easy that the problem of low prototyping efficiency that is induced by complicated arithmetic has been greatly resolved
Sls中環形掃描可以得到比光柵式掃描好得多的成型質量，本文提出了一種全新的基於環形掃描的分區方法，該種分區方法的演算法簡單，很大程度上解決了環形掃描中由於演算法復雜所導致的成型效率不高的問題。
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