气动针式除锈枪 pneumatic needle de-scaling gun

气动针式除鳞枪 pneumatic needle descaling gun

滑动探针式调谐器 slide probe tuner

可动指针式指示器 movable-pointer indicator

弹簧推动式击针 spring-activated firing pin

左右摆动式指针 right left needle

互动式针刺法 mutual-motion needling method