specific bulk weight 中文意思是什麼
specific bulk weight
解釋
單位體積密度-
The shape of model sand particle play an important role in submarine rest angle, starting speed, bulk specific weight and some other physical characters
摘要顆粒形貌對模型沙的水下休止角,起動流速、堆積密度等性能有顯著影響。
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