大多数针叶树木材中都含有松脂。
本文是关于针叶树木材弹性特性研究的理论分析。
Theoretic analysis for elastic modulus of softwood was carried out in this paper.
尤其是在俄罗斯上调了出口税率后，美国、加拿大、新西兰提倡大量出口木材，因而中国也可以从这些国家来进口针叶树木以满足内部需求。
Especially with the rise of export tax rate in Russia and the encouragement in wood exporting in America, Canada and New Zealand, China can import conifer wood from those countries to meet the demand.
尤其是在俄罗斯上调了出口税率后，美国、加拿大、新西兰提倡大量出口木材，因而中国也可以从这些国家来进口针叶树木以满足内部需求。
Especially with the rise of export tax rate in Russia and the encouragement in wood exporting in America, Canada and New Zealand, China can import conifer wood from those countries to meet the demand.
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