The middle radioactivity counts were 5 308,3 683 and 3 245 respectively.
放射性计数中位值:Ⅰ级图像5 308个,Ⅱ级图像3 683个,Ⅲ级图像3 245个。
参考来源 - 采集时间、注射药量与正电子发射体层摄影术图像质量RO, NF, UF, MF and ED in combination with conventional pretreatment technologies respectively are pointed out the main application processes nowadays by which can be obtained with radioactivity removal of 98%~99.9% and removal factor of 100~1000.
膜组合技术处理放射性废水净化率可达98%~99.9%、净化因子可达100~1000。
参考来源 - 膜分离技术处理放射性废水·2,447,543篇论文数据,部分数据来源于NoteExpress
In fact, we'll do the whole experiment ourselves minus the radioactivity in just a minute, so we'll be able to answer that question for you.
来算一下,事实上等会儿,我们自己会把,整个实验都做一遍。
As carefully as people work with radioactivity here, and using often much, much safer radioactive materials than radium bromide, and using them, and special hoods, and having special procedures, they still do a lot of checking with these Geiger counters to make sure everything's safe.
虽然在这里人们,用放射性物质都非常的小心,而且通常用的材料放射性,都比溴化镭要小得多,并且用的时候,都用特殊的容器,特殊的操作过程,但我们平时仍会用。
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