video head

boiler drum head

closure head assembly

injection well head assembly

Upper Head

upper head tuft

well head assembly

Video assisted thoracoscopy surgery Video assisted minithoracotomy surgery

hammer head [= hammer head shark]

head to head configuration

head to head structure

water diversion from the upper Yangtze River in the south to the upper Yellow River in the north

cutting drum of coal drum shearer

Transferring drum and rubbing drum

Turning drum and twisting drum mechanism

128-bit video cards

2-channele video encoding

2-way video encoding

32-bit video cards

3D video