Investigation on the mechanical properties of open-hole spruce and douglas fir

Authors

  • Beijing Forestry Machinery Research Institute of State Forestry Administration
    Beijing, China

  • BEIJING FORESTRY MACHINERY RESEARCH INSTITUTE OF STATE FORESTRY ADMINISTRATION BEIJING, CHINA
    ZHEJIANG A&F UNIVERSITY, CHINA

  • Beijing Forestry Machinery Research Institute of State Forestry Administration
    Beijing, China

  • Beijing Forestry Machinery Research Institute of State Forestry Administration
    Beijing, China

  • Beijing Forestry Machinery Research Institute of State Forestry Administration
    Beijing, China

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