0 the quality that some atoms have of producing a type of energy that can be very harmful to health -- 放射（性）
A dangerous amount of radioactivity was released into the environment last month. 上个月泄漏了大量的放射线，造成很大危险。
The amount of radioactivity fixed in the tubes was compared with that of control tubes reacted with the antibody alone.
Other areas of reduced radioactivity were classified as small lesions.
Three millilitres of scintillation fluid were added to the void volume and radioactivity measured.
Such decreases in efflux of radioactivity in response to tripelennamine were observed in each of five other experiments.
Nuclear wastes emit heat, although the amount varies according to the nature of the wastes and their radioactivity.
Transport was calculated from counts of decompositions of radioactivity recorded from a scintillation counter ; and expressed as rmoles/108 cells.
Incorporated radioactivity was measured at time-points between 10 and 120 sec.
At the time stated, samples were taken for cytotoxicity assay and radioactivity determination.
