?木材色素
... 木质部;木部 wood part;hadrome;xylem;tracheal portion;vessel part 木材色素 wood pigment 木浆 wood pulp ...
Zinc is also important for die-casting, galvanizing and rubber making and can be used as a paint pigment, wood preservative and agricultural fungicide.
FORBES: Gold Is Good, These Five Metals May Be Better
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