All the lumber has the fine sound vibration performance, the difference of lumber sound vibration performance can the more directly reflect plate intensitydifference.
木材都具有优良的声振动性能，木材之间的声振动性能的差别能较直接的反映木材强度差别。
2
To overcome the disadvantages of light intensitydifference frequency stabilization, the dithering frequency stabilization for four frequency differential laser gyro is studied in this paper.
为避免传统光强差稳频方式的缺陷，提出了四频差动激光陀螺小抖动稳频方法。
3
To investigate the difference of microscopic autofluorescence imaging of normal and adenocarcinoma colonic tissue, and the autofluorescence intensitydifference among the colonic tissue layers.