gravity current 中文意思是什麼

gravity current 解釋
密度流
  • gravity : n. 1. 認真，嚴肅，莊重。2. 重要性，嚴重性；危險性。3. 重量。4. 【物理學】重力，引力，地心吸力。5. 【音樂】（音調的）低沉。
  • current : adj. 1. 通用的，流行的。2. 現在的，現時的，當時的。3. 流暢的；草寫的。n. 1. 水流；氣流；電流。2. 思潮，潮流；趨勢，傾向。3. 進行，過程。
  1. After the ventilator is started, the dust catcher is under negative state and will absorb air with dust in the ductwork to the case on the dust catcher, then the air current will enter into the upper side of filter bag flowing from upper side to lower part ; most of the dust will come out from the filter bag under function of gravity and inertia and then fall into the lower case ( ash hopper ), then the clean air will enter into the air via ventilator

    當通風機啟動后，除塵器便處于負壓狀態，並將余風管中的含塵空氣吸入到除塵器上箱體內，然後氣流進入濾袋上口自上而下流動，多數粉塵顆粒在重力和慣性力的作用下穿出濾袋下口，沉降至下箱體內（灰斗） ，被濾的凈化氣體經通風機排入大氣中。
  2. The main achievements of the thesis include : 1 the model design of abyssal aquaculture cages ; 2 the hydrodynamic characters of the cages under the action of pure current in the states of floating vs submerging ; 3 the hydrodynamic characters of the cages under the action of pure wave in the states of floating vs submerging ; 4 the hydrodynamic characters of the cages under the joint action of currents and waves in the states of floating vs submerging ; 5 the effects of currents and waves on the exciting forces and motion of the gravity cages

    漂浮狀態和下潛狀態相比，在單純流作用下，網箱的水動力特性； 3漂浮狀態和下潛狀態相比，在單純波浪作用下，網箱的水動力特性； 4漂浮狀態和下潛狀態相比，在波浪水流共同作用下，網箱的水動力特性； 5
  3. The gravity events include slumping event and turbidity - current event, and the gravity event deposits were developed in deep - water carbonate rocks in the upper sinian

    重力事件可分為滑塌事件和濁流事件，其沉積產物均分佈於上震旦統，夾在大套的深水碳酸鹽巖中。
  4. The research shows that students misunderstand the relation between force and motion. gravity and action / reaction ; that in dc circuit, students of different age groups have the belief of " consumption of current ", " clashing currents " and " the battery as a constant current generator " ; that in understanding the concepts of electricity students lack th e knowledge of relating the micro with the macro ; and that students have serious difficulties in understanding the propagation of mechanics wave, the speed of wave and superposition, and do not make a distinction between the initial conditions and the medium properties of the system

    具體表現在：學生對力和運動的關系、重力和平衡、作用力與反作用力存在一些誤解；對直流電路，不同年齡的學生不同程度地存在電流消耗、碰撞電流、恆定電流源等觀念，而且對電學概念的理解缺乏宏觀與微觀的聯系；學生在機械波的傳播、波速、波的疊加上存在嚴重的困難，對于機械波的傳播學生不能區分初始條件和媒質特性，並錯誤地將動力學某些觀念與機械波進行類比。
  5. Precambrian madiyi formation in banbianshan, taojiang of hunan province is consisted of deep - water gravity flow deposits, deep - water traction current deposits and deep - water in situ deposits

    摘要湖南桃江半邊山前寒武紀馬底驛組為一深水重力流沉積、深水牽引流沉積與深水原地沉積共生組合。
  6. In this application, the lorentz force generated by the interaction between the current in the wire and the geomagnetic field produces an electro - dynamic drag leading to a fast orbital decay. in this paper, we make an intensive study of the process of de - orbiting using electro - dynamic tether system. the concrete work includes : firstly, i have studied the basic principle of how to generate the electro - dynamic drag, modeled via accuracy geomagnetism, made a concrete analysis of the de - orbiting duration, the magnitude and direction of electro - dynamic drag under the action of the dipole and accurate geomagnetic models, set up a counterbalance between electro - dynamic torque and gravity gradient torque, emulate the de - orbiting process of spacecraft, and compared the change of six orbital factors and the de - orbiting duration under the action of the dipole and accurate geomagnetic models

    本文對基於電動力纜繩的航天器離軌過程進行了深入研究，具體工作如下:首先，本文研究了電動力纜繩產生電動力拉力的基本原理，建立了精確地磁場模型;分別在偶極子模型和精確地磁場模型作用下，對電動力拉力的大小、方向、離軌時間及電動力纜繩傾角的大小進行了計算分析;建立了電動力力矩與纜繩系統重力梯度力矩的平衡關系;分析了電動力力矩為系統提供能量的原理;最後分別在偶極子地磁場模型和精確地磁場模型作用下，對受電動力纜繩作用的航天器的離軌過程進行模擬，分析了在不同精度地磁場模型下，航天器離軌過程中各軌道參數的變化情況，並比較了不同模型對離軌時間的影響。
  7. The main purpose of this paper is to treat a gravity wave field with an array of two or more cylinders and to demonstrate the wave height distribution with different flow speed or different flow incident angle in a wave - current flow field with constant depth

    摘要本文的主要目的，在研究重?水波通過有限水深之群柱間時周圍?場的波高現象，以及探討波?共存時在?同?速及?同入射角?經圓柱群時所造成之波高變化。
  8. 2 ) a simplified sprinkler system which is composed of water source, pipeline pump, pipes, current of water display, nozzle, contral valve, is suitable for our country. and its water is supplied by gravity tank or gravity tank or hydrant system or city 3 ) spray intensity of simplified sprinkler system is 3 l / min. m2, protection area of them is 50m2

    3 ）簡易自動噴水滅火系統的噴水強度為3 / min . m2 、保護面積為50m2 、噴頭的安裝間距為3 . 7m等參數。 4 ）簡易自動噴水滅火系統最大設計動作噴頭數為四隻，供水時間宜為30min等。
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