New timber should be treated with a preservative.
新采的圆木应进行防腐处理。
At present, more and more preservative treated timber is being applied in residential environment.
当前人居环境中的防腐木材用量急剧增加。
At present, more and more preservative treated timber is being applied in residential environment.
当前人居环境中的防腐木材用量急剧增加。
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