The results showed that corn particle size did not affect DMI, growth performance and the total tract apparent digestibility of DM, GE, CP, NDF and ADF (P>0.05).
结果表明，玉米粒度不影响DMI、生长性能以及日粮DM、能量、粗蛋白质、中性洗涤纤维和酸性洗涤纤维的全消化道表观消化率（P>0.05）。
Results: The concentration of PVA was the significant factor affecting the particle size (P<0.05).
结果：聚乙烯醇（PVA）浓度是影响微球粒径的的显著因素（P<0.05）；
Using coordinate rotation based on P-wave particle vibration, aligning the source components at different depths have been achieved.
采用P波粒子振动的坐标旋转，可使不同深度的震源分量对齐。
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