英语翻译1-weighta250mlmeasuringcylinderandtarethebalance2-Removefromthebalanceandrotatethe250mlmeasuringcylindertoanangleofabout300whilstpouringintothecylindermaterialthematerialundertestataconstantspeed3-R

Question

英语翻译
1 -weight a 250ml measuring cylinder and tare the balance
2 -Remove from the balance and rotate the 250ml measuring cylinder to an angle of about 300 whilst pouring into the cylinder material the material under test at a constant speed
3 -Re-weight the measuring cylinder and the material under test when the cylinder is full to the 250ml graduation(W)
4 -Ensure the contents are given no additional compaction during the filling of the measuring cylinder through either shaking or tapping
这是关于体积密度测试的步骤，翻译的一塌糊涂。

Answer 1

先声明下,我不是专业翻译,只能给你翻个大概,你凑合着看下.
1 称一下250ml 量筒的重量
2 将该量筒旋转300度并同时以一定速度注入待测的物质
3 当量桶内注入的物质达到250ml满刻度的时候测量下此时的重量
4 在向量筒注入的过程中要通过摇晃或轻击的方式确保待测物质不受到额的 压实作用.