... thrust reverser 反推力装置 precious timber trees 珍贵用材树种 method of integrating factor 积分因子 ...
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珍贵用材树种资源是我国重要的战略资源。
The precious timber trees resources are our country important strategic resources.
树冠窄小的乐东拟单性木兰生长速度中等，但其木材密度大、径向均匀性高，是优良的珍贵用材树种；
P. lotungensis is also an excellent precious timber specie with higher wood density and radial uniformity, though its growth rate is medium.
柚木为马鞭草科柚木属植物，是世界上最珍贵的用材树种之一。
Tectona grandis classified as Tectona plant of Verbenaceae is one of the most valuable timber tree species in the world.
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