Lumber cutting length in the lumber grading criteria had the largest effect on grade yields and monetary values of the aspen logs.

木料等级评定系统中木料切割长度对于白杨圆木的等级产量及货币值具有最大的影响。

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Furthermore, the system for grading timber was agreed on by the two countries in 2006, when they settled their previous spat over softwood lumber.

此外木材等级分类系统是在2006年，两国就软木材发生争议时，经过双方的同意而建立的。

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Furthermore, the system for grading timber was agreed on by the two countries in 2006, when they settled their previous spat over softwood lumber.

此外木材等级分类系统是在2006年，两国就软木材发生争议时，经过双方的同意而建立的。

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