求翻译：丸料扇形阀的启闭采用脉冲距离控制原理，即当钢材达检测开关时，计数器开始计数，使钢材头部进入抛射区时（预置脉冲数），打开扇形阀进行抛丸除锈。钢材尾部脱离开关经一定脉冲距离(预置脉冲数)，使钢材尾部离开抛射区后扇形阀自动关闭停止供丸。从而减少了由于空抛引起的丸料磨损以及叶片、衬板的磨损和动力耗量。是什么意思？

(A preset number of pulses) in the the fan valve opening and closing of the pill material the pulse distance control principle, that is when the steel up to detect switch, the counter starts counting, when the steel head into the projectile District open the fan valve shot blasting. The fan valve th

capsules of the fan-shaped valve closing Distance control with a pulse, that is how the steel up to detect switch, a counter to start counting, steel head thrown into the area (pre-built pulses) and fan-shaped valve open blasting rust. Steel trailer away from the switch away from a given pulse (pre-

The pill material fan-shaped valve opens shuts uses the pulse distance control principle, namely when the steel products reach examines the switch, the counter starts to count, causes the steel products forehead to enter the ejection zone time (initialization pulse number), turns on the fan-shaped v

Pill fan-shaped valves open and close using pulse distance control principle, that when steel detection switch, the counter starts counting, making steel in the head when entering the throwing area (preset pulse number), open the fan-shaped valve for shot-blasting. Steel trailer from switching a cer