The samples of cut tobacco after cooling and storing were tested with DD60A and D51, the(results) were analyzed and the performances of these two densimeters were compared and evaluated.
分别采用DD60A和D51 密度仪测定制丝生产线冷却后和储丝后成品烟丝样品，并将两者的测定结果进行分析，对这两台仪器性能进行比较并作出评价。
The samples of cut tobacco after cooling and storing were tested with DD60A and D51, the(results) were analyzed and the performances of these two densimeters were compared and evaluated.
分别采用DD60A和D51 密度仪测定制丝生产线冷却后和储丝后成品烟丝样品，并将两者的测定结果进行分析，对这两台仪器性能进行比较并作出评价。
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