economic diameter limit 经济径级限界

merchantable diameter limit 可销售径级界限

diameter-limit 径级择伐

diameter limit cutting 最小径级采伐

diameter limit selection cutting [林] 径级择伐 ; 径阶择伐

diameter-limit cutting 径级择伐

cutting to a diameter limit 按直径限度采伐

cutting by the diameter limit 按直径限度采伐

culling with a diameter limit 按直径选择