jet hole 中文意思是什麼

jet hole 解釋
噴孔
  • jet : JET ＝Joint European Torus 歐洲聯合核變實驗裝置。n 1 【礦物】煤玉，黑色大理石。2 烏黑發亮的顏色。...
  • hole : n 1 洞，穴，孔；（衣服等上的）破洞；傷口；漏洞；窩，坑；水流的深凹處，（河道的）緩流窪。2 （獸的...
  1. When he swims in the sea a big jet of water comes out into the air from the hole in his head.

    當他在大海中游泳的時候，一股水柱就會從他頭頂上的洞里噴出，噴向空中。
  2. The thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed channel are measured by using infrared camera and then the impingement cooling heat transfer coefficients are deduced. the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : for a single row normal impingement, the impingement cooling effectiveness is enhanced with the increase of impinging reynolds number or the decrease of hole space to diameter ratio, and the best effectiveness is achieved under the jet - to - surface spacing equals to 2 ; when the jet is oblique to the confined wall, the cooling effectiveness is weaken especially under the jet - to - surface spacing ratio is greater than 2 ; for double rows normal impingement cooling, the cooling effectiveness of rear row jet is weaker than the front row under lower impinging reynolds number or bigger jet - to - surface spacing

    對于單排垂直射流，沖擊冷卻效果隨射流雷諾數的增加、孔間距與直徑比的減小而得到提高，沖擊間距比為2時換熱效果最好;沖擊孔中心線向通道封閉一側傾斜后，射流沖擊冷卻的范圍變窄，當沖擊間距比大於2時駐點區的對流換熱能力明顯降低;對于雙排沖擊射流，孔排間距與直徑比的增加使沖擊冷卻范圍變大，但在兩排孔之間區域的對流換熱系數有所下降;在較小的沖擊射流雷諾數和較大的沖擊間距比下，後排射流的沖擊換熱效果要遜於前排射流。
  3. The ratio of the length to the depth of scour hole decreases with the increasing scour depth, in spite of the reason is the increase of the air concentration, the decrease of the jet velocity or the decrease of the jet thickness. 5. governing equations of the aerated jet flow are established

    摻氣對沖坑形態並沒有實質性的影響，沖坑的寬深比隨沖坑深度的減小而增大，無論造成沖坑深度減小的原因四） 1大學i學博士學位論文是摻氣、降低流速還是減小入射水舌厚度，其變化規律都可用相同的直線關系表示。
  4. This paper effectively deals with water inflow for excavated and cast - in - place pile under water with the constrained condition and strata of large water content during the course of forming hole and casting pile by using triple tubes directional jet as waterproof curtain, to decrease the compression for river channel, and ensure safety and quality in the phase of construction

    摘要針對水中施工挖孔樁，條件受到限制、地層中含水量較大，為盡可能避免造成對河道的佔用與影響，採用三重管定噴技術做止水帷幕，有效地解決了成孔成樁過程中涌水等問題，保證了工程施工的安全與質量。
  5. Firstly, for jet array impingement cooling, the effects of the distance of adjacent holes, the impinging distance and jet reynolds number on heat transfer characteristic at the target wall are summarized under staggered holes arrangement and the same hole diameter. and then, the numerical simulation of inclined multi - hole film cooling has been studied. the influence factors examined in this case include blowing ratio and the distance of adjacent holes

    首先通過對射流沖擊冷卻方式的研究，分析了相鄰孔間距、沖擊間距以及射流入口雷諾數對沖擊靶面換熱系數的影響情況，然後對多斜孔冷卻方式進行了數值模擬，重點探討了吹風比和相鄰孔間距對絕熱溫比與壁面換熱系數的影響規律，最後，針對沖擊-發散復合冷卻流場的計算物理模型，研究吹風比、相鄰孔間距的變化對沖擊-發散復合冷卻流動與傳熱特性的影響。
  6. Comparing with non - rotating abrasive jet, the hole diameter and the volume of rock - breaking are many times larger than the former by use of rotary abrasive jet on the same condition

    與非旋轉磨料射流相比，同樣條件下旋轉磨料射流鉆孔直徑和破巖體積都比前者高出多倍。
  7. For the first application of water jet technology in multi - ring hole reaming and on the basis of the laboratory simulation test deep discussion was made and specific technical parameters were determined. the engineering practice has proved its feasibility

    首次將水射流技術應用到多環擴孔施工中，在實驗室模擬試驗的基礎上對其進行了深入的探討，並確定了具體的設計參數，工程實踐證明該方法是可行的。
  8. Application of high - pressure jet grouting to artificial digging hole piles

    高壓噴射灌漿技術在人工挖孔樁中的應用
  9. Experiments show that rotary abrasive jet has double profits that are large hole diameter and high rock disintegration efficiency, and with the increment of pump pressure, the hole diameter also increases

    結果表明，旋轉磨料射流破巖具有鉆孔直徑大和破巖效率高的雙重優點，並隨泵壓增加，鉆孔直徑也增加。
  10. Trend analysis of shaped jet on concrete target jet hole

    聚能射流侵徹混凝土靶射孔形狀變化趨勢分析
  11. The existing results about scour hole was summarized. experiments was made about the influence of aeration on scour, the dynamic pressure on the original riverbed and the scouring hole bottom, and the influence of aeration on the dynamic pressure and the velocity of submerged jet. scour was simulated by numerical model

    在總結前人研究成果的基礎上，試驗研究了摻氣對基巖沖刷破壞的影響；基巖沖刷過程中沖坑底部脈動壓強隨沖坑深度的增加而變化的特性；摻氣對沖坑未形成前河床底部及基巖沖刷坑底部脈動壓強的影響；摻氣對射流軸線流速變化的影響等。
  12. A numerical study is reported to investigate the flow and temperature fields for jet array impingement cooling, inclined multi - hole film cooling and impingement / effusion film cooling

    運用數值計算的方法分別對陣列射流沖擊冷卻、多斜孔氣膜冷卻以及沖擊-發散復合冷卻方式的流動與傳熱特性進行了三維數值研究。
  13. It is also used to prevent or solve geologic calamity, such as landslide and rock collapse etc. in addition, it is also used to drill small size water well and hige - pressure jet grouting hole

    適用於水電站鐵路公路邊坡大噸位預應力錨固孔排水孔的施工，以及預防滑坡巖石坍塌等地質災害治理工程。也適用於小型水井的施工高壓旋噴引孔的施工。
  14. It also used to prevent or solve geologic calamity, such as landslide and rock collapse etc. in addition, it is also used to drill small size water well and high - pressure jet grouting hole

    Yg - 80a鉆機適用於水電站工程鐵路公路邊坡大噸位預應力錨固孔排水孔的施工，以預防滑坡巖石崩塌等各類地質災害治理工程也適用於小型水井鉆高壓旋噴引孔的施工。
  15. It mainly produces three - dimensional polyester hollow staple, four - hole staple and seven - hole staple as well as jet - gel - cotton serial products, needle - punched cotton products and quilting products, which are widely used in bed products, warmth products and toys

    主要生產三維滌綸中空短纖、四孔短纖和七孔短纖以及噴膠棉系列產品、針刺棉產品、絎棉絎縫製品，廣泛應用於床上用品、保暖製品和玩具製造。
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