pit aperture

丝锁气压计_馆档网 ... "纹孔环"," Pit annulus" "纹孔口"," Pit aperture" "轮带,重缘孔纹"," Pit border" ...

木材加工行业专业术语之英汉对照 ... 壁孔对(纹孔对) pit pair 壁孔口(纹孔口) pit aperture 壁孔膜(纹孔膜) pit membrane ...