softwoods

The three-dimensional FLOW-RESISTOR network for longitudinal gas permeability of softwoods

针叶树材纵向气体渗透的三维流阻网络

The horizontal compression stress can be decreased by a half if using softwoods instead oft hardwoods .

采用软木作为填充材料较之填充硬木，可以大约降低一半的压应力；

Burning behaviour of three wood species ( two softwoods and one hardwood ) was tested by cone calorimeter in the study .

利用锥形量热仪对人工林杉木、杨木和马尾松的燃烧性进行了研究。

The softwoods are such trees as pine , fir and spruce .

松、冷杉、云杉一类的树木是软木材。

The existing models for gas permeability of softwoods only considered the connection of the pores in one direction of wood grain or two directions .

以往关于针叶树材气体渗透的模型或理论，只考虑针叶树材内气体渗透通道在1个或2个方向上的连接。

Typically , the specialty nonwoods have physical properties superior to softwoods and can be used in lower amounts in the furnish when used as a softwood substitute .

一般来说，特种非木材纸浆有优于针叶树木材物理性能，可在配料中作为软木制替代品少量使用。

Very slow-grown softwoods have excellent workability .

生长非常慢的针叶材有着特别好的加工性能。

The properties of the woods and barks of Eucalyptus and Australian acacias differ between themselves and from the softwoods common in the northern hemisphere .

桉树和澳洲金合欢（acacias）的木材和树皮，性质上互有差异，也不同于北半球常见的针叶材。

Extended modified continuous cooking ( EMCC ) of softwoods , followed by elemental-chlorine-free ( ECF ) and total-chlorine-free ( TCF ) bleaching was studied in the laboratory .

进行了针叶木深化脱木素连续蒸煮与无氯漂白的研究。

The species of low permeability in softwoods were more than that in hardwoods because the numbers of cell cross per unit length in axial direction which hinder flow of fluid in the former were more than that in the latter .

针叶材低渗透树种比阔叶材多，与纵向单位长度上阻碍流动细胞间隔数在前者比后者多有关；