The diamond cut ratios , such as girdle diameter , total depth , pavilion depth , pavilion angle , crown depth , crown angle , table size , girdle depth and the other related symmetry parameters , can be calculated with those key corners
2.
The curves showed that the moisture contents of straw and the shear bar are the main factors impacting the cutting ratio besides cutting speed . the speed of 40mm / s is necessary to cut off wet straw . ( 4 ) the testing results indicate that the rotary speed of the blade axle need to be more then 1230 rpm ( rotary radius of the blade is 25cm ) to cut off straw ( with moisture content less then 20 % )
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