identical unit or proportional unit of the body
time-rock unit =time-stratigraphic unit
∞-shaped diaphragm wall
a free floating sensing diaphragm
alumina diaphragm defect
atmosphere relief diaphragm
basalt filament diaphragm fabric
Billiter diaphragm cell
black diaphragm intraocular lens
bored cast-in-situ concrete diaphragm walls
Bucky diaphragm
栅格光阑
平向阑
布凯氏活动X线滤线器
平向闸
布凯氏X线滤器