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標準物質 |
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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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實驗級生物顯微鏡 |
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