Mean DBH平均胸径meanv.意思是；打算；导致；意味adj.低劣的；刻薄的；卑鄙的；出色的；吝啬的；平均的；中等的n.平均值；平均数；中间；中庸mean maintenance man-hours平均维护工时mean pumping tem- perature抽水平均温度mean-square error criteria均方误差准则mean time between complaints平均申告间隔时间mean dispersion error matrix离差矩阵Mean speed of piston plunger柱塞平均速度mean fuel-conversion ratio平均燃料转换比Mean transprostheticgradient平均跨瓣压差Mean Time between Interrupts中断平均间隔时间Mean Active Maintenance Time平均有效保养时间

1. The method focuses on minimizing the ensemble mean square error of the estimation.
   该方法可以估计的总体均方误差最小。
2. In the present article some theoretical results in the mean square amplitude matrix for the cyclic-diazomethane type molecules are reported.
   本文在理论上导出了环偶氮甲烷型分子的振动均方振幅矩阵。