no-flow pressure 中文意思是什麼

no-flow pressure 解釋
無流量壓力
  • no : adj 1 〈加在單數名詞前，相當于冠詞 a an 的否定形式〉（一個也）沒有。 Is there a book on the table...
  • flow : vi 1 流，流動。2 （血液等）流通，循環。3 流過；川流不息；（時間）飛逝；（言語等）流暢。4 （衣服、...
  • pressure : n 1 壓；按；擠；榨。2 【物理學】壓力，壓強；大氣壓力；電壓。3 精神壓力，政治[經濟、輿論等]壓力。4...
  1. Finite volume method is appilied in numerical modeling of the flow in no - pressure tunnel of high water reservoir in this paper. i select standard k - turbulence modeling that put forward by launder and spalding in 1972 by weighted poly - turbulence modeling. the difficulty is that there is free surface in flow, but free surface problem ' s calculating region is indefinitely

    本文利用有限體積法對高水頭下水庫無壓泄水洞水流進行了紊流數值模擬，根據多種紊流模型的優缺點進行比較，選擇了launder和spalding於1972年提出的標準的k ?紊流模型。
  2. When a series 994 backflow preventer is installed for dead - end service applications, discharge from the relief vent may occur due to water supply pressure fluctuation during static no - flow conditions

    當系列994防迴流閥安裝在終端應用場合時，由於在靜止無流動情況下水供應壓力波動可能會從安全閥排放口產生排放。
  3. The flow passage of high - and low - pressure cylinders of turbine no. 7 in guodin jianbi power plant had been retrofitted in 1999 with cooperation of pasonce company in england, and better result being obtained

    摘要國電諫壁發電廠於1999年與英國帕森斯公司合作，對7號汽輪機高低壓缸通流部分進行了改造，取得了較好的效果。
  4. This may be due to fluctuating supply pressure during a static or no flow condition

    這可能是由於在靜止或沒有流動情況下供應壓力波動引起。
  5. Relief vent will discharge water when, during no - flow periods, ( 1 ) the first check valve is fouled or ( 2 ) the inlet pressure to the device drops sufficiently due to upstream pressure fluctuations

    如果在無流動期間，安全閥排氣口有水排出，則原因可能是， （ 1 ）第一止回閥受到污染，或（ 2 ）由於上游壓力波動造成裝置的進口壓力下降太大。
  6. Because vortex flowmeter has no movable mechanical parts, the output signal of it is a frequency signal that is proportional to flow signal, and it has less pressure loss, wider measurement range, it is used widely

    由於渦街流量計具有無機械可動部件，可得到與流量成正比的頻率輸出信號，壓力損失較小和量程比較寬等優點，因而應用相當廣泛。
  7. The main contributions of this work are included as follows : ( 1 ) numerical tests of the outside axial and helical flows were carried out respectively. the velocities and pressure profiles and shear distributions have been obtained and they were compared due to the different flow field. it is concluded that when no particles are deposited, the helical flow would lower the pressure on membrane surface to some little extent but not markedly

    （ 1 ）對外軸向流和外切向流兩種方式下膜器環隙內流場進行變參數數值實驗，作出流場及切應力的分佈規律，分析無顆粒沉積時層流條件下流動結構對過濾通量的影響，認為：採用外旋流的方式將對膜面壓力有削弱作用，但並不明顯。
  8. Large water flow by the main pump. allows very low nozzle pressure and achieve no pilling, no

    分開來，可輕易獲得壓力很低，但水量很大的柔
  9. In this dissertation, the author summed up the muti - technique in fluid dynamics, heat and mass transferring, mechanical designing and computational technique and studied the conventional pressure spray dryers with different air disperse structure and outlet equipment, at last put forward the theme i. e. the study on combined spin - flow pressure spray drying technology, the main contents were as follows : ( 1 ) the combined spin - flow pressure nozzle was designed whose novel structure has no report at present, and the structural designing parameters were obtained through analyzing the physical characteristic of materials and distribution of particles

    本文總結了國內外在壓力噴霧乾燥裝置的研究應用狀況，並分析了現有噴霧乾燥裝置設計方面的優缺點，運用流體力學、空氣動力學、傳熱傳質學、機械設計和計算機技術等多學科知識，綜合研究了傳統壓力噴霧乾燥系統的單噴嘴霧化裝置在併流、逆流以及混流乾燥中的應用和噴霧乾燥塔的不同布風裝置以及出風裝置的設置情況等，提出了新型旋流式組合壓力噴霧乾燥技術並對此進行了研究，其主要內容包括： （ 1 ）本文創造性地設計出旋流式組合壓力噴嘴的基本結構，並通過對料液的物化特性研究分析以及顆粒度的分佈要求，給出了噴嘴的不同結構設計參數。
  10. Requirement : supply pressure drop must be 1. 0 psid or more when water flow stops from test cock no. 2

    要求：當水流從測試旋塞2號上停止時，供應壓降必須在1 . 0psid及以上。
  11. If the downstream system pressure is higher than the set pressure under no flow conditions, the cause could be thermal expansion, pressure creep or dirt / debris on the seat

    如果在無流量情況下，下游系統壓力高於設置壓力，則原因可能是熱膨脹，壓力蠕變或閥座上的污垢/碎片。
  12. And then, a method of load - flow low - pressure measurement was proposed in the light of the hydraulic - resistance theory of servo valve. the validity of the method was proved by the experimental results. therefore, the measurement of the characteristic of load - flow and no - load flow can be realized by using this method

    然後根據電液伺服閥的液橋理論提出了一種負載流量低壓測量方法，在所開發的測試系統上，利用電液比例閥模擬流量測量裝置對所提出的方法進行了試驗驗證，實現了利用低壓流量計和壓力傳感器進行電液伺服閥負載流量特性和空載流量特性的測量。
  13. It is shown that when the exit area of secondary nozzle and the fuel / oxidizer ratio is fixed, the increase of mass flow rate of secondary flow lead to the decrease of velocity of mixed flow, and increase of total mass flow rate. the synthetical result of these two phenomenon cause the increase of thrust of rocket ejector, but the increasing magnitude is relatively small, indicating that these is no necessary to claim large bypass ratio in rocket ejector design. in the comparison between two configurations, the typical one has better performance, indicating the importance of pressure ratio

    結果表明：在固定二次噴管出口面積和氧燃比的條件下，二次流（引射空氣流）流量的增加引起混合氣體出口速度的下降和總流量的增加，二者綜合作用使發動機推力增加，但增幅不大，表明在設計發動機結構和工作參數時，不必過分追求大的引射系數；兩種結構的性能對比分析表明了增壓比對引射火箭性能的提高具有重要意義；對引射火箭的熱力循環分析同樣表明，增壓比對于提高發動機性能非常關鍵。
  14. May, the abnormal precipitation is mostly effected by the east - westward location difference of the subtropical high pressure of the west pacific and the trough of east asia, while the cross equatorial flow streams at low level near 105 e almost have no effect to it

    五一期間兩區降水異常主要受西太平洋副高和東亞槽東西位置差異及強弱的影響， 105 「 e附近越赤道氣流對兩區降水影響都不是很大。十一期間兩區降水異常主要受西太平洋副高南北位置差異及強弱的影響。
  15. If an applied stress or pressure drop is not sufficient to break the gel or exceed the yield stress, no flow will occur.

    如果施加的應力或壓降不足以破壞凝膠或不足以超過屈服應力，則不會有流動產生。
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