（5）打开点火装置电源及空气压缩机开关、调节适当的量程和衰减（range and attenuation）（关机时，量程应打至1，衰减为∞）。（6）打开钢瓶氢气阀，调压力为1.0kg/cm2）（两管道一样），同时将空气压力调至0.5kg/cm2。
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WIDE GAIN AND ATTENUATION RANGE 宽增益及衰减范围
The effects of load in certain range were to restrain the swelling-shrinkage deformation and the attenuation of shear strength.
荷载对干湿循环过程中膨胀土的胀缩幅度及强度衰减具有明显抑制作用。
Based on the all attenuation, we can find the short range radar worked in this band is affected by action distance and interfere.
根据分析所得到的各种衰减量，可以推导出工作于此波段的近程雷达受作用距离的影响及抗干扰性能。
Results: High quality VR-3D images will be obtained by selecting 2 or 3 objects, appropriate range of attenuation value and opacity %.
结果：选择2或3个目标、合适的衰减值及不透明度的限值可获得良好的VR立体成像。
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