常見例句雙語例句During the process of forward simulation , in order to overcome the numeric dispersion in ordinary finite-difference operator, we adopted optimized 25 points finite-difference operator;在正演模擬中，為了克服常規(guī)差分算子的數(shù)值頻散，采用了25點優(yōu)化差分算子； 返回 forward-difference operator