木头的变化速度虽然不快，但是各部分的变化步调是不一致的——木头其实是一个包含各种元素的混合体：既有早材，又有晚材；既有直纹，又有波纹；还有木节、年轮和疵点。

Wood moved slowly, but not equally, with its mixture of springwood and summerwood, straight and wavy grain, knots, rings and imperfections.

youdao

木材密度与晚材率的正相关显著。

Wood basic density is clearly related to late wood percent.

youdao

造林密度大，则生长轮变窄，管胞列数减少，晚材率增加。

As planting density increased, the growth ring width and tracheid row decreased but proportion of late wood increased.

youdao

造林密度大，则生长轮变窄，管胞列数减少，晚材率增加。

As planting density increased, the growth ring width and tracheid row decreased but proportion of late wood increased.

youdao