Milking machine and nuclear reactor: what they have in common

1. Step 1. Milking machine — has part — Vacuum pump. A vacuum pump.
2. Step 2. Vacuum pump — is part of — Mass spectrometer. A vacuum system.
3. Step 3. Mass spectrometer — uses — Isotopes. It discovered the isotopes of stable elements.
4. Step 4. Isotopes — is used in — Uranium. Uranium-235 and uranium-238.
5. Step 5. Uranium — is used in — Nuclear reactor. The fuel is uranium.

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