采用风速的韦布尔双参数方法测算出平均风能密度、平均有效风能密度，以及年风能可利用时间。
The mean wind energy density, mean effective wind energy density and annual available time of wind energy are calculated by using Two-Parameter Weibull Distribution function of wind speed.
采用双能量X线骨密度测量仪(DEXA)测量全身骨量及体脂百分比。
Bone mass of the total body were measured using dual energy X-ray absorptiometry (DEXA).
该机采用机电一体化，分层布料、振压结合、高度密度双控的设计原理，具有激振力大、成型速度快、操作简单、 运行可靠等优点。
QDV-10 adopts mechanotronics, press-vibration, double-layers material feeding, double control of height and density and have following advantage.
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