1. Bark Pocket （夹皮）
树木受伤之后继续生长，将受伤树皮全部或局部包入树干中所形成。一般以尺寸分等级。夹皮破坏木材的完整性，随着发生年轮弯曲，使木材材质降低。
（Comparatively small area of bark around which normal wood has grown. Also a patch of bark partially or wholly enclod in the wood. Classified by size, as with pitch pockets.）
2. Birdye （鸟眼纹）
写雨的诗句古诗
由纤维局部扭曲而形成的似鸟眼状的花纹，常出现在槭木（枫木）、桦木、水曲柳等树种。
三年级语文生字表 （Decorative figure due to small conical depressions in the outer annual rings, which appear to follow the same contour in subquent growth rings, probably for many years. Rotary slicing （旋切）cuts the depressions crosswi, exposing a ries of circlets called bird’s eyes.
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3. Check（干裂）
原木由于干燥或季节性的原因所形成的小裂缝，一般顺着木材的纹理方向。
（Small slits running parallel to the grain of wood, caud chiefly by strains produced in asoning and drying.）
云南建水4. Heartwood（心材）
指在生活的树木中已不含生活细胞的中心部分，其贮藏物质（如淀粉）已不存在或转化为心材物质；通常色深；无输导树液与贮藏营养物质的功能
（The wood extending from the pith or the center of the tree to the sapwood, usually darker in color than sapwood.）
5. Honeycomb（蜂窝状孔洞）
由粉蠹类、食菌小蠹、白蚁或海生钻孔动物等密集蛀蚀木材，破坏成蜂窝状或筛孔状者。
（Any substance, as a easting of iron, a piece of worm-eaten wood, or of triple, etc, perforated with cells like a honeycomb. )
6. Knot（节子）
包含在树干或主枝木质部中的枝条部分。
（A portion of a branch/limb who growth rings are partially or completely intergrown on the board’s face, with the growth shaped so that it will retain its place in the piece. The average dimension of the expod knot surface shall be ud in determining the size.）
7. Knot ,sound and tight（活节/生节）
由树木的活枝条形成，活节的木材组织与其周围的木材紧密连生，节子的质地坚硬，构造正常。
（Knots that are solid across their face and fixed by growth to retain their place.）
8. 农村生活污水治理Knot,checked（死节）
由树木的枯死枝条形成，节子的木材组织与其周围木材部分脱离或完全脱离。其质地坚硬，有的松软。
9. Mineral stain（矿物线）
男生生日祝福语 土壤中的矿物质通过木材的根系吸收而沉积在木材中，具体表现为从橄榄绿到墨绿色/棕色的类似于铅笔痕迹一样的不均匀分布的条纹。四川省的简称
(An olive to greenish-black or brown discoloration believed to show regions of abnormal concentrations of mineral matter in some hardwoods. It is common in hard maple, hickory, and basswood. See also Mineral streaks. )
10. Pitch
存在木材的树脂道或导管中，尤其是多年生木本植物心材部位的导管中。由多种成分组成的混合物，通常为无定型固体，表面微有光泽，质硬而脆，少数为半固体。不溶于水，也不吸水膨胀，易溶于醇，乙醚，氯仿等大多数有机溶剂。加热软化，最后熔融，燃烧时有浓烟，并有特殊的香气或臭气
（An accumulation of resin that occurs in parations in the wood or in the wood cells themlves.）
11. Pitch pocket （树脂囊）
又称油眼。树脂囊是指某些针叶材年轮中间充满树脂的条状沟槽，在横断面上表现为充满
树脂的弧形裂隙，径切面上为短小的裂隙，在弦切面上为充满树脂的椭圆形浅沟槽。
（A well-defined opening between the annual growth rings that contains pitch.）
12. Pitch streak
沉积物在木材细胞内形成一种明显的条纹。
（玉米的营养成分A well-defined accumulation of pitch in the wood cells in a more or less regular streak.）
