They collected data on 14 variables, such as human height, the price of gold, tree ring width, and temperature from pre-industrial Europe between the years 1500 and 1800.
他们收集的数据涉及到14种变量，包括人类身高，黄金价格，树木年轮密度，以及欧洲工业化之前公元1500年到1800年之间的温度变化。
Whether annual ring width markedly affects both strength properties and shrinkage properties of the wood is discussed.
讨论了年轮宽度与木材强度性能和干缩性能的关系。
As planting density increased, the growth ring width and tracheid row decreased but proportion of late wood increased.
造林密度大，则生长轮变窄，管胞列数减少，晚材率增加。
The article analyzed the relationship between tree ring-width chronologies and the meteorological elements in west Sichuan plateau by sequential analysis of 4 tree-ring chronologies.
本文利用川西高原4条树木年轮年表序列，分析了树轮年表和川西高原气象要素的关系。
The article analyzed the relationship between tree ring-width chronologies and the meteorological elements in west Sichuan plateau by sequential analysis of 4 tree-ring chronologies.
本文利用川西高原4条树木年轮年表序列，分析了树轮年表和川西高原气象要素的关系。
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