... 干内粉 Meat meal 机械窖 Mechanical den 混合物 Mechanical mixture ...
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mechanical superphosphate den 机械室
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Two kinds of big sympodial bamboo, Dendrocalamus yunnanicus Hsueh and Den. membraanaceus and their physical and mechanical properties have been studied in the paper.
研究了两种最重要的丛生竹种云南黄竹和龙竹的物理和化学性能。
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