downward gravity 中文意思是什麼
downward gravity
解釋
重力向下延拓；下降梯度-
Obviously the force of gravity mg is acting vertically downward.
顯然重力的Mg作用垂直向下。 -
As the balancing platform tends to make the barycenter move backward, a more balancing stress distribution under the wall, a higher and steadier wall can be achieved. furthermore, the resupine back of the downward wall not only works reasonably, but also can reduce the amount of excavation and filling obviously. so gravity retaining walls with balancing platform are applied heavily
衡重式擋土墻因具有衡重臺使墻身重心后移、墻底應力趨于平衡，可提高擋土高度、增強墻體穩定性；且仰斜式下墻不僅受力合理、還可減少開挖與回填量等優點而被大量採用。 -
For solving the problems that downward continuation of the space gravity anomaly can not be used in downward continuation of sea surface gravity anomaly, on the basis of prey principle used to compute gravity in the surface - layer of the earth, and with considering the density of sea water and sea bottom topography, two new methods are proposed
摘要針對空間重力異常向下延拓方法不適用於海面重力異常向下延拓的問題，根據珀雷原理求地球表層內部重力的方法、海水密度及海底地形的特徵，提出了兩種海面重力異常向下延拓的演算法。 -
And the no - isothermal structure can accelerate the breaking of gravity wave in mesospause, and the breaking of gravity wave is an important source of convection and small - scale waves. the propagation of gravity wave will affect the distribution of minor species. the breaking of gravity wave accelerates the downward transport of atomic oxygen, some smaller - scale structures appear on the horizontal distribution of atomic oxygen number density, and other chemical species are also affected due to the chemical reaction with atomic oxygen and the propagation of gravity wave
在重力波的傳播過程中，氫氧大氣成分的水平和垂直分佈均受到了不同程度的影響，以氧原子的響應最為明顯，而其中重力波破碎在氧原子水平分佈上的反應則是非線性重力波過程的一個重要表現；另外，分析顯示，重力波的非線性傳播對oh氣輝的峰值分佈由明顯影響，小尺度重力波的傳播有時會引起oh氣輝出現奇異的雙峰分佈，重力波的破碎現象也可以從對氣輝的觀測中反映應出來，這對利用氣輝觀測研究重力波傳播特性有非常重要的指示意義。 -
In general, the upward amplitude curve " curvature is larger, and it changes quicker. on the contrary, the downward is smaller and slower ; because the flare force contains the square of the wave elevation velocity, it results in an difference between the flare force frequence and the associated moving frequence ; the flare force decreases the downward amplitude of heaving oscillations ; the speed of ship has an ignorant effect on the peak values of three calculated values, but there is an obvious effect on the oscillating frequence ; the wave amplitude has an effect on the ship motion, and there is an linear relation between the oscillating amplitude and the wave amplitude on the whole. by the way, there are some experiences and lessons according to the progress calculation : before the calculation of the ship motion, we should checkout the balance in a calm water firstly, namely, the whole displace of ship and the longitudinal position of the center of gravity must be consistent with the draft in calm water, or else, the calculation may show the " floating " phenomenon ; the mixed language programming has a lot of virtues, but it exists a fatal limitation - the debug of dll
研究表明：在某些頻率范圍內相關水動力系數基本不隨吃水變化，只有超過某一頻率后水動力系數的值才會出現差異；在橫搖方向，水動力系數並沒有隨著吃水的變化發生規則變化，而是出現了波動現象；近船首剖面的水動力系數計算表明，水動力系數的波動非常大，並遠遠偏離了平均位置的水動力系數值，值的變化速率也不盡相同，總的看來，上振幅曲線曲率較大，變化較快，下振幅曲線曲率較小，變化較慢；外飄力和波面運動的速度的平方項有關，導致其振動頻率和相應運動方向的頻率不同；外飄力使升沉向下運動的幅值減小；船速對三個計算量的峰值影響甚微，但對振動頻率有明顯影響；波幅對船舶運動的影響是明顯的，船舶運動的幅值基本上和波幅成線性關系。 -
The ill - posed problems include the ill - conditioned and the rank - deficient ones in geodesy, which exist widely in gps data processing, deformation analysis, geodesy inversion, gravity field continuation downward, and so on
大地測量中的不適定問題包括病態問題和秩虧問題，它廣泛存在於gps數據處理、形變分析、大地測量反演、重力場向下延拓等領域。
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