... 大容积密闭罩 large ace enclosure; large space enclosure closed booth 单位体积密度 specific bulk weight 地层体积密度 formation bulk density ...
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specific bulk weight
比散重
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The shape of model sand particle play an important role in submarine rest angle, starting speed, bulk specific weight and some other physical characters.
颗粒形貌对模型沙的水下休止角，起动流速、 堆积密度等性能有显著影响。
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