edge grain

On the basis of Chinese fir price change trend analysis since 1995 on Hujian Pushang State-owned Forest Farm,the break-even price for market selling timber is calculated through using management type growth index of normal Chinese fir medium diameter timber and through combining with related technical economy index.

在对福建埔上国有林场自1995年以来的杉木价格变动趋势分析的基础上,以具有代表性的一般杉木中径材经营类型生长指标并结合有关技术经济指标,计算市场销售木材保本价格,据以分析木材价格变动对森林资源资产经营的影响,为森林经营者经营决策提供借鉴。

By taking the central island radius as the key parameter,its relationship with the traffic operation of the signalized roundabout was discussed.

文中将中心岛半径作为关键参数,研究其与信号控制环形交叉口交通运行的关联性。