本底

• The background count of the detector is 4～6 counts 1 min .
  探测器的本底计数率为46脉冲1分。
• Many instruments are equipped to carry out this background correction on an automatic basis .
  许多仪器已经装备了这种自动本底校正器。
• At the surface, radioactivity of the conglomerates is locally as high as 30 x background .
  在地表，砾岩的局部地段的放射性高达30倍本底值。
• A survey on the insect vectors in shaoguan city
  广东省韶关市区媒介生物本底调查
• The investigating report of mosquitoes at taizhou port
  九江口岸媒介生物本底调查报告
• Background air pollution monitoring network
  气象组织本底空气污染监测网
• The investigation report on mosquitoes background at xiamen port
  厦门口岸蚊类本底调查报告
• Background air pollution monitoring network bapmon
  本底空气污染监测网
• The background count of the detector is 4 6 counts 1 min
  探测器的本底计数率为4 6脉冲1分。
• The investigation report on mosquito ' s backgroud at liuting airport
  青岛流亭机场蚊类本底调查报告