... stem form (树)干形(状) stem timber 树干材 stem volume 树干材积 ...
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Arbors grow fast with good stem shape and good timber.
乔木的干形好、材质优良、较速生。
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It is one of the key techniques of improving timber quality of poplar to effectively control the nodal scars of stem and decrease the Numbers of insect hole.
有效地控制杨木节痕和减少虫眼是提高杨木质量的关键技术之一。
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