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| English | Danish |
| half-life The time required for one-half the atoms of a given amount of radioactive material to undergo radioactive decay | halveringstid |
| half of the inhaled particles reaching the lung are exhaled | halvdelen af de partikler, der når lungerne, udåndes igen |
| isodose curves for radiation of half-value layers of O,5 mm Al | isodosiskurver for stråling med en halveringstykkelse på 0,5 mm Al |