ground rate of radio-activity 放射性的地面率
contaminating radio-activity 污染放射性
Radio activity 放射热 ; 细野晴臣 ; 放射性
Pressure-radio activity curve 压力
radio activity inspecting method 放射线穿透检测法
Radio fast activity 射电快速活动
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 1898 Madane Curie and her husband declared that they believe there was something in mature which gave out radio-activity.
1898年居里夫人和她的丈夫宣称他们相信在自然界中存在着放射性物质。
With the invention of radio, television and most recently, the Internet and computer games, it seems that reading books is no longer a popular activity.
随着收音机、电视和最近的互联网和电脑游戏的发明，读书似乎不再是一种流行的活动。
BAE Systems will develop a new radar warning receiver prototype that can identify radio frequency and communications activity in real time.
BAE系统公司将开发一种新型雷达预警接收机原型，该原型能实时识别无线电频率和通信活动。
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