【摘要】 山河屯林业局用改造后弓形尺即能量原条长级，又能量径级，提高了工作效率。本文同时对原木检验方法进行了探讨。更多还原

【Abstract】 The bo-shaped ruler using in the tree lenght scaling is introduced and the methods of tree length testing are discussed in this paper.更多还原