The amount or rate of emission or ejection.

排放量流量、流速，或排出量，排出的速度。

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The amount or rate of emission or ejection.

排放量：流量、流速，或排出量，排出的速度。

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Because of the continuous decay, the quantity of radioactive material and the rate of emission of radiation decrease steadily.

由于连续衰变的结果，放射性物质的数量，辐射发射率都逐渐下降。

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The team of physicists was investigating the possibility of using radioactive decay rates to generate random numbers, since the rate is constant but the emission of individual atoms is unpredictable, it seemed like a perfect fit.

FORBES: Radioactive Decay Rates May Not Be Constant After All

Stacking up the numbers, he realised that human activities were adding CO2 to the atmosphere in a quantity and rate equivalent to all natural processes of absorption or emission of the gas.

FORBES: Global Warming Is No Threat?