培养结束，测量神经突起长度、密度后，取出标本作同位素放射性测定。
After the culture end and the measurement of the length and density of neural axons, the samples were taken out for isotopic radioactive measurement.
一种仪器，观察和测量射线的密度，比如放射性物质的粒子，包括一盖格试管和其它有关联的电子设备。
An instrument that detects and measures the intensity of radiation, such as particles from radioactive material, consisting of a Geiger tube and associated electronic equipment.
测量地下地层密度的一种放射性电缆测井方法。
A radioactive type of wireline well log that measures the density of subsurface formations.
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