close approximation 中文意思是什麼
close approximation
解釋
相當準確的近似值- close : vt 1 關（窗等），閉（眼等）；蓋（蓋子等）；鎖閉，封閉，塞，隔絕。 ★對 door box drawer 等，口語較...
- approximation : n. 1. 接近；近似。2. 【數學】近似值。3. 概算，略計。
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For any approximation to be valid it must provide a result that is in some sense close to the solution of the original problem.
任何有效的近似式必須在某種意義上提供一個接近於原問題解的結果。 -
This work gives amsotropy surfaces of three collision systems he - hf, he - hcl, he - hbr. comparing theoretical results with experimental ones has carried out the discussion on feasibility of adapted potential model. all differential cross sections ( dcs ), partial wave cross sections ( pcs ) and total scattering cross sections ( tcs ) have been achieved by using close - coupling approximation method to calculate the three systems, and results above have also been discussed and analyzed
首先，具體介紹了理論計算方法? ?密耦近似方法，接著討論了各種勢能模型的優缺點，利用孫桂華改進的勢能模型? ? ms勢，分別給出了he - hf 、 he - hcl 、 he - hbr三個碰撞體系的各向異性勢能面，並結合計算結果與實驗結果的比較，對所採用的勢能模型的可行性展開了討論；用密耦近似方法對he - hf 、 he - hcl和he - hbr三個碰撞體系進行計算，得出了各種微分散射截面、分波截面和總散射截面，並將計算結果進行討論和分析。 -
Be a very close approximation to
很接近於 -
Such cards have " generally accepted purchasing power " and are thus a close approximation to money
這類儲值卡具有被廣泛接納的購買力，因此與貨幣非常近似。
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