等孔径等孔距布孔
same aperture and distance hole-collocating
不等径孔桥
nonequal diameter opening row
等径道角挤压
equal channel angular extrusion
ECAE
等径孔桥
equal diameter opening row
孔径径向扫描
Radial scanning aperture
radially scanning aperture
小孔孔径
the aperture of the small hole wafer