?极限调节器

pre-emergency speed governor 超前动作危急保安器 pre-emergency governor 极限调节器 ; 极限调速器 Maintenance of emergency governor 危急遮断器检修 ..

?极限调速器

pre-emergency speed governor 超前动作危急保安器 pre-emergency governor 极限调节器 ; 极限调速器 Maintenance of emergency governor 危急遮断器检修 ..

?备急调速器

... 备急,备用 pre-emergency 备急调速器 pre-emergency governor 备急发电机 emergency generator ...