Шинэ өртөлтийн гарыг солихын тулд рентген аппаратыг …
The X-ray handswitch is a hand-held switch, usually set to two gears, but there are also one gear handswitch (such as a dental handbrake) and three gears. The two-speed handbrake grading switch is turned on when the button is pressed, and turned off when released. Press the button to the first st...