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标准物质 |
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Parameter |
Value(mBq/g) |
Americium-241 (241Am) |
1.1 |
Cobalt-60 (60Co) |
320 |
Cesium-137 (137Cs) |
59.2 |
Plutonium-238 (238Pu) |
0.26 |
Plutonium-239,240 (239Pu + 240Pu) |
4 |
Antimony-125 (125Sb) |
<0.14 |
Strontium-90 (90Sr) |
1090 |
Thorium-228 (228Th) |
28.6 |
Thorium-232 (232Th) |
26.8 |
Uranium-235 (235U) |
0.75 |
Uranium-238 (238U) |
17.4 |
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实验级生物显微镜 |
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