finite precision number 中文意思是什麼
finite precision number
解釋
有限精度數-
The numerical simulation equations of the border curves in term of and as well as the matching rules and the frequency dependence of microwave electromagnetic parameters of a broad - band homogeneous absorbing coating with a finite value of reflection loss are available. these results pointed out the direction to develop rams ". according to the radar - absorbing model, the optimized design of rams with thin - layer, light - weight, broadband and strong - absorbing is available by the simple genetic algorithms, which can effectively conduct the research work of rams to the detail. small but completely, the electromagnetic parameter ' s databases of rams that based on actual microwave absorbers have been set up, the object function has been constructed which conform to the involved goals, the adaptive coding measure is taken which extends the coding length dynamically adapting to the condition of the number of actual absorbers or the precision of thickness and absorber - volume - percentage, the decoding technique is initiated which satisfies light - weight and strong - absorbing as well as thin - layer and broadband by adopting of tracing variable restricting conditions dynamically to control total thickness. when decoding, the variable restricting conditions of thickness are dynamically traced, so gain the radar absorbing coatings of light - weight multiple - layer single - ingredient. similary, of thickness and absorber - volume - percentage, of light - weight multiple - layer multiple - ingredient. also, the rams ' demand to radar - absorb performance as frequency is met making use of the penalty function
作為遺傳演算法的具體實施：根據本實驗室近來研製的吸波材料，建立了吸波材料的相關數據庫；構造了能真實體現「薄、輕、寬、強」優化目標的目標函數；根據材料的實際數量以及塗層厚度精度要求、吸收劑體積分數精度要求，建立了能動態擴展相應碼長的自適應編碼方法；首創了通過動態跟蹤變量的約束條件來控制塗層總厚度的解碼技術，以此實現了在不弱化寬頻、高強的吸波性能目標的同時，兼顧到薄層、輕質的使用性能要求；在解碼時通過動態跟蹤厚度變量的約束條件，實現了多層單組分吸波塗層對重量輕的要求；通過動態跟蹤厚度變量的約束條件和吸收劑體積分數的約束條件，實現了多層多組分吸波塗層對重量輕的要求；使用權重系數變化法，實現了吸波塗層的分頻段吸波性能要求。 -
The concept of rsdd can solve the conflict between the infinite precision real numbers of spatial object and the finite precision number systems of computers. then we can preserve the closure of spatial operations and rsdd spatial data types. for the closure of spatial operations about ros, we have studied the intersection between rpos and gained the restructure algorithms, i. e., redraw a rpo - line, reconstruct a rpo - plane, and reconstruct a rpo - solid
為了保證基於rsdd對象ros在進行幾何運算時的封閉性，論文研究了對均勻空間離散域基本對象相交情形的調整演算法（重畫一條線、重構一個面和重構一個體）以及對均勻空間離散域對象的操作演算法（插入一個rpo - point的演算法、插入一條rpo - line的演算法、插入一個rpo - plane的演算法和插入一個rpo - solid的演算法） 。 -
The engineering applying results indicate this formula is feasible. however, the finite number of samples influences its precision. therefore, it is necessary to improve this formula
工程計算結果表明，該公式用來計算岸坡穩定坡角是可行的，但由於樣本容量有限，影響了其計算精度，因此有待通過增大統計數據量來進行完善。
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