basic wind pressure 中文意思是什麼
basic wind pressure
解釋
基本分壓-
The results of numerical experiments, using the four - dimensional variational data assimilation system of the nonhydrostatic mesoscale model mm5, show that : the tangent linear model and adjoint model conducted by keeping the " on - off " switches the same as the basic state, can provide a good approximation of the first - order information to the nlm perturbation and a good descent direction for the minimization procedure ; switching on and off at every other time step in the kuo cumulus parameterization scheme do n ' t impact the convergence rate of cost function ; the existence of the switches do n ' t impact improvement to the mm5 model rainfall prediction because that not only specific humidity, but also wind, temperature and pressure are assimilated into the model
非靜力中尺度數值模式mm5的四維變分資料同化系統進行的數值試驗結果表明： 「開關」變量保持與基態一致，所構造的切向線性模式能夠提供關于非線性模式擾動的一階近似，伴隨模式所計算的梯度值能夠為最小化過程提供較好的下降方向；郭氏降水參數化方案中對流每隔一個積分步的交替發生並不影響目標函數最小化的收斂速度； 「開關」變量的存在也不影響將風、溫度、氣壓和比濕結合起來同化對mm5降水預報準確性的提高。 -
Abstract : by means of the basic climatic principle and the local astronomical parameters the optimal dip angle, maximum wind pressure borne by the roof material, the depth of the cold - proof ditch and the suitable distance between the greenhouses in chengdu area are calculated
文摘:應用氣侯學基本原理，當地天文參數與氣候資料，計算了成都地區節能日光溫室採光面最佳傾斜角，頂面覆蓋材料承受最大風壓，防寒溝深度及溫室間適宜距離。 -
Basic environmental testing procedures for electric and electronic products wind pressure
電工電子產品基本環境試驗規程環境風壓試驗方法
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