【化】 活动管板式换热器

head, optical with filters for movable information storage

isolating switch with angularly-movable bridging switch

movable scotch blocks, signal, point

reverse plating circular knitting machine with independently-movable needles

movable joint (joint ) joint (joint )

photographic composing machine with movable character

movable pteromopha

spreader stoker with movable hoppers for combustion