traumatic resin canals

... "外伤髓线假导管"," Traumatic ray tracheid" "外伤树脂沟"," Traumatic resin canals" "移动起重机"," Travelling crane" ...

2.2.5.2　受伤树脂道(traumatic resin canals)在针叶树材中，凡任何破坏树木正常生活作用的现象，都能产生受伤树脂道。