期刊学术社区 关键词 ： 长岭岗林场 杉木 幼龄材 成熟材 木材密度 全干密度 气干密度 基本密度 [gap=785]Keywords : Chinese fir juvenile wood mature wood wood density
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... Mattison ripsaw 麦迪生纵切锯 mature wood 成年材 maximum circular saw blade diameter 最大圆锯片直径 ...
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... 成长材 mature wood 成长的 accrescent; crescive; growing 成长股 developmental shares; growth stock ...
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PINE MATURE WOOD 松树成熟材
mature wood cutting 成熟枝插
Juvenile and mature wood 幼龄材与成熟材
juvenile wood and mature wood 幼龄材与成熟材
In 1000bc, there came post and beam buildings to form the main wood structure in ancient Egypt and Greece and there were mature wood trusses in Rome.
早在公元前1000年，木结构就成为古代埃及和希腊的基本梁柱结构形式，在古罗马则有着成熟的木桁架技术。
In physical and mechanical indexes, the basic density, air-dried density, compression strength parallel to grain, MOR, MOE and toughness of mature wood are higher than that of juvenile wood.
在物理力学性质指标中成熟材的基本密度、气干密度、顺纹抗压强度、抗弯强度、抗弯弹性模量及冲击韧性高于幼龄材；
The discovery of nuclei existing in mature xylem cells is a new one in Wood Anatomy.
在成熟木材细胞中发现细胞核是木材解剖学的新发现。
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