【建筑】防倾斜装置

anti-siphonage device (backsiphonage preventer, anti-vacuum device)

anti-fall device of rotary machinery【矿】

animal scaring device with means for emission of audible signals

device for measuring nonlinear distortion factor

manual dampening device for laundry article to be pressed (linen)

motorcycle head-lighting device

microfiche management device

photosensitive device for controlling the photosensitive device of cutting-off machines