为了测定木料是什么季节采伐的,研究人员采用了一种碘酒测试法。他们在木料的横切面上涂以碘酒,如果是冬天采下的木料,则其材质上积聚了大量糊状物质,而且其木质中心段呈紫色;而夏季采伐的木料,碘酒不变色。还有一种测量木材质量的古老方法:耳朵紧贴原木一端,用金属物品敲打原木另一端。在无内部腐朽和损伤的优 In order to determine what seasons wood fells, the researchers used an iodine test. They coat iodine on the cross-section of the wood. If wood is picked in the winter, a large amount of pasty material accumulates on the material, and the center section of the wood is purple. In summer, the iodine does not change color. There is also an ancient method of measuring the quality of the wood: the ears cling to one end of the log and the other end of the log is hit with a metal object. Excellent in no internal decay and damage