XG200型X线机床上球管手动缩光器是靠溴钨灯的光束来对准摄片中心的,我们在使用中感到有如下缺点:(1)开启溴钨灯时必须先开启X线机的电源,这样床上球管的灯丝亦处于燃点的状态,这对旋转阳极球管是一无味的损耗。(2)当投照对位时必须每次都要开关 XG200 X-ray machine manual tube ball screw tube is based on bromine tungsten light beam to align the center of the film, we feel in use have the following disadvantages: (1) turn on the bromine tungsten lamp must be turned on X-ray machine Of the power, so that the bed tube filament is also in a state of ignition, which is a rotten anode bulb is a tasteless loss. (2) must be turned on and off every time when it comes to alignment