There were dead woods only in 14,22,42,54,70 cm diameter grade in Broad - leaved Korean Pine over - cutting forest.
阔叶红松过伐林内倒木大头直径仅在14,22,42,54,70cm径阶有倒木分布.
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A physical model of over - cutting which happens between the tool and the work - piece is presented.
在建立刀具对工件发生过切模型的基础上,进一步提出了临界过切点的数学模型.
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