timber and lumber standardizstion
... timber 木材，木料 timber and lumber standardizstion 木材标准化 timber assortment 木材分类；选材 ...
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世界各地的建筑规范要求对所有材料实行严格的检测标准，比如木材和水泥。但是对竹子的检测尚未标准化。
Building codes everywhere require strict standardization of tests for all materials, such as timber or concrete. But tests for bamboo have not been standardized.
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