When the common bottom aeration facilities is used, the downstream sidewalls near the anti-arch section still has big-range un-airflow area so that it is easy to cause cavitation damage.

Calculation and analysis design for blind area of photoelectric transformation system in transmission detection lnstrument for visual range;

Blind Area of Application and Research of Educational Technology——Education of Disabilities;

The two-axes infrared horizon is an absolute detection methodology which avoids blind areas that occur with the single infrared horizon technique.

A discussion about dead zone of double-slits eccentric photorefractor;

Explore and Study of the dead zone of mobile communication;

Then three conventional methods to solve dead zones of mobile communication, namely redesigning base stand, installing repeater and increasing new base stand, were analyzed and compared.

This paper discusses the principle of MPRF wave-form design for airborne PD radar, and the range-velocity blind zone is calculated.

The reasaon that creates blind zone in radar display and tactics to this problem are also presented.

The blind zone problem in the wide-swath synt he tic aperture radar (SAR) is usually solved by method of variable pulse repetiti on frequency (PRF).

Remote pulse laser range finder with small blind region;