reflection density

Since velocity and density generally increase with depth , the reflection coefficient is usually positive.

因为速度和密度一般是随浓度而增加, 故而反射系数通常为正值.

CONTRAST BETWEEN TRAPS AT THE SHALLOW SUBBOTTOM DEPTH AND THE SEISMIC REFLECTION FEATURES OF SHALLOW GAS Affect of Slops Particles Apparent Density on the Tank Depth for Shallow Tank Flotation Wastewater-treatment

海底浅层圈闭与浅层气地震反射特征对比浅池气浮净水污粒表观密度对池深的影响

Experiments research: the reappearance of dot is verified by printing gray scale to get the specimen sheet and measure the value of specimen sheet by reflection density apparatus ( X-Rite 428);

实验研究：以灰梯尺作为原稿进行印刷，得到实验样张，采用反射式密度仪（X-Rite428型）测量其密度值，验证网点的再现特性；

And a new scheme is proposed to accomplish the slip boundary condition on solid wall by imposing a layer of solid particles and peculiar reflection condition at the solid boundary, where the non-physical fluctuation in fluid particle density near the solid wall is effectively eliminated.

提出用固壁粒子层结合流体粒子反弹运动的方法来处理固壁边界有滑移流动边界条件，有效地消除了目前耗散粒子动力学及分子动力学模型在固壁附近的粒子密度波动问题。

The size of test hole have greater impact on back-reflection, the influence of back-reflection on the short-circuit current density of the DSSC increase as the size of the test hole increase.

测试遮光罩开孔尺寸大小对背反射有较大的影响，背反射对DSSC的短路电流密度的增加率的影响随着测试遮光罩开孔尺寸的增加而增加。