1、
Special round pass design of the third stand of roughing mill for high-speed wire
高速线材粗轧机第3架特殊圆孔型设计
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2、
Numbers of fine trees existing in stand roughing and transforming stand to be a seed stand.
林分内个体间差异极大,存在着一批优良木,经去劣疏伐可将林分改造成母树林.
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