When the diffractive optical lens is illuminated by white light, its focal length not only relates to material dispersion and wavelength dispersion, but also to aperturefactor.
在白光照射下，衍射光学透镜的焦距不仅同材料色散和波长色散有关，而且还同孔径因子有关。
2
For the same water depth and same aperture, the gas flow was the major factor for effecting the bubble size and velocity.
对于相同的水深和相同的孔径，流量是影响气泡大小和速度的主要因素。
3
The experimental results show that the loss factor and damp ratio decrease, the resonance frequency increases with increase of the aperture of the piston in the damper.