pitch pocket 树脂束 ; [植] 树脂囊 ; 脂囊

pitch pocket or gum pocket 树脂襄

Medium pitch pocket 中脂囊

Large pitch pocket 大脂囊

pitch pocket west bank 脂囊

Small pitch pocket 小脂囊

Pitch&Pitch pocket 油脂及油脂囊

pitch h pocket 松脂孔

chip pocket accumulated pitch error 容屑槽周节累积误差