pith flecks造句
造句与例句
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- Mine traces, or pith flecks, are found on both sides of the winter ring layer, with the smaller, younger mines always on the inner side of the ring and the larger, more mature mines on the outside.
- In quartersawn material, where the wood is cut into boards with the growth rings roughly perpendicular to the face of the board, the "'medullary rays "'often produce beautiful figure such as silver grain, medullary spots, pith flecks, etc.
- It's difficult to see pith flecks in a sentence. 用pith flecks造句挺难的
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