reflection boundary meaning in English

反射边界

The global weak solutions of boltzmann - poisson transport model with absorbing - reflection boundary
输运模型的整体弱解
It makes use of the mirror reflection boundary condition . the calculation result shows that the terse technique can save much calculation tune ( more than 30 % ) . in fact , its result is more accurate , because it does n ' t take any approximation in the cavity region
本文还对内含空腔系统的计算通过引入镜面反射边界条件而作了简化处理，实际计算表明，简化处理大幅度节省了计算时间，达30以上，而且其计算结果更为准确，因为它在计算过程中对空腔所在区域并未采取任何近似。
According to their space position , the seismic features of shallow gas in this region can be divided into three groups : ( 1 ) features in the stratum : acoustic blanket , acoustic curtains , acoustic turbidity , irregular strong top reflection boundary , and phase pull - down in both flanks ; ( 2 ) features of the seabed : seabed pockmark and giant sunken pit ; ( 3 ) features in the seawater column : acoustic plumes , cloudy turbidity and point - line - type reflection
该区的浅层气地震特征按空间位置分为3大类： ( 1 )地层中的特征：声学空白、声学幕、声学扰动、不规则强反射顶界面、两侧相位下拉； ( 2 )海底面的特征：海底麻坑、大型塌陷坑； ( 3 )海水层中的特征：声学羽流、云状扰动、点划线反射。