It also analyses the influence of attenuation of stress wave cased by the soil resistance and the damp of pile shaft material in dynamic pile test on the precision of pile shaft integrity test.
分析了动力试桩中，因土阻力和桩身材料阻尼引起的应力波衰减作用对桩身的完整性检测精度的影响。
In the measurement of infrared radiation characteristics of an object, the atmospheric attenuation in the measuring path is an important factor which has influence on measurement precision.
在测量目标的红外辐射特性时，测量路径上的大气衰减是影响测量精度的一个重要因素。
The spectrum effect on attenuation coefficient is less than 5%. The material densities can be reconstructed with such precision.
在图像重建中利用上述的线吸收系数能够反演出精度达5%的材料密度。
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