Three radial sawing patterns, sectorial radial sawing models of quarter timbers, trisected timbers and hexsected timbers are presented in this paper.
介绍了三种径向下锯模型：
法、三法和六法。
词
区;
经济;Three radial sawing patterns, sectorial radial sawing models of quarter timbers, trisected timbers and hexsected timbers are presented in this paper.
介绍了三种径向下锯模型：法、三法和六法。
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