Investigation on the mechanical properties of open-hole spruce and douglas fir Authors Dong Chen Beijing Forestry Machinery Research Institute of State Forestry Administration Beijing, China WEI ZHANG BEIJING FORESTRY MACHINERY RESEARCH INSTITUTE OF STATE FORESTRY ADMINISTRATION BEIJING, CHINA ZHEJIANG A&F UNIVERSITY, CHINA Yu-Sheng Wu Beijing Forestry Machinery Research Institute of State Forestry Administration Beijing, China Zheng Jin Beijing Forestry Machinery Research Institute of State Forestry Administration Beijing, China Qian-Wei Zhang Beijing Forestry Machinery Research Institute of State Forestry Administration Beijing, China Post Views: 91
