在平板封头上的开孔 平盖开孔

openinginflathead  detail>>

在平板封头上

in flat heads  detail>>

平盖开孔

opening in flat head  detail>>

封头上翻边开孔

flued openings in  detail>>

平板封头

flat-plate closures  detail>>

封头开孔

head openings opening in head  detail>>

补强的开孔

reinforced opening  detail>>

有限的开孔

restricted opening  detail>>

开孔

cutout open pore open-cell perforate perforation piercing port sc...  detail>>

带法兰的开孔

flanged opening  detail>>

封头和壳体开孔

head and shell opening  detail>>

封头及壳体开孔

head and shell openings  detail>>

开孔，封头和壳体，计算

openings, head and shell, computation of  detail>>

经过修整的开孔

finished opening  detail>>

用于排放的开孔

openings for drainage  detail>>

经受压力突然波动的开孔

openings subject to rapid pressure fluctuation openings subjected to rapid pressure  detail>>

套管制成的开孔钻头

starting casing barrel  detail>>

通过焊接连接处的开孔

openings through welded joints  detail>>