基本解釋晚材比例英漢例句雙語例句As planting density increased, the growth ring width and tracheid row decreased but proportion of late wood increased.造林密度大，則生長(zhǎng)輪變窄，琯胞列數(shù)減少，晚材率增加。proportion of late wood更多例句專業(yè)釋義土木建築工程晚材比例