Taught in a group setting, these courses cover the basics of tree hazard assessment, line placement, ascending, descending and moving around in the canopy.
这门课程为团体教学，包含树木危险性评估、绳索放置、上升、下移、树木自由移动的基本知识。
The canopy sample is the important and surmount subject of Hongdu Aviation Industry Group.
座舱盖数控样件是洪都航空工业集团的重点攻关项目。
The canopy sample is the important and surmount subject of Hongdu Aviation Industry Group.
座舱盖数控样件是洪都航空工业集团的重点攻关项目。
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