big back angle的用法和样例：
- By changing the fixed knife material, adding spacer, repairing the moving knife front and back angle, transforming the casting bond into double one, the effects were obvious.
- It all began on November 28, whcn Mr Paton's eight-ycar-old son, Bob , was playing in the big back garden of his parents' house.He met an old man with a long white beard.
- The device is posterior cutter grinding to drill in cone surface grinding method that it can vouch for drill with reasonable back angle, and symmetry precision is high.
- Our firm is likely to reap a big profit this year.
- Setting up a rollforming model with the same forming sequence,two different materials DP800 and Q235 have been applied to the model in order to compare their spring back angles and deformation energy.