Materials used as cigarette papers, filter plug wrap and filter joining paper, including materials having an oriented permeable zone. determination of air permeability.
作卷烟纸用的材料，过滤纸和过滤嘴接缝纸材料，包括定向可透气部分用的材料。透气性的测定。
Aiming at how to prevent periodic interference, more papers have covered LMS adaptive filter, which needs to adjust many parameters and shows instability in pulse type interference.
针对怎样抑制周期性干扰，文献中报道较多的是LMS自适应滤波方法，但该方法需调整参数多，对脉冲型干扰表现出不稳定性。
Some papers indicate that using high attenuation rate neutral filter can expand the measuring range of CCD.
多篇文献提出在CCD前加高衰减率的中性滤光片来扩大测温范围。
The injection branch parameters of the serial resonant injection hybrid active power filter (SRIHAPF) have a great influence on the filtering effect, which few papers focused on.
注入支路对注入式混合有源电力滤波器的滤波效果有着极其重要的影响，目前有源电力滤波器在这方面的探讨很少。
The injection branch parameters of the serial resonant injection hybrid active power filter (SRIHAPF) have a great influence on the filtering effect, which few papers focused on.
注入支路对注入式混合有源电力滤波器的滤波效果有着极其重要的影响，目前有源电力滤波器在这方面的探讨很少。
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