單式彎紗single sinking3 a- C& I: J. N& Y1 P! Q
復式彎紗sinking and dividing
有回退式彎紗sinking with robbing3 w' J- Y7 [' _2 |; H6 ]
無(wú)回退式彎紗sinking without robbing
夾持式彎紗sinking with clamping
0 k6 D6 d( o. O! d, x+ V" m- H非夾持式彎紗sinking without clamping
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