| E(X) | expected value of the random variable X |
|---|---|
| H1/2 | half-value layer |
| HVL, hvl | half-value layer |
| HVT | half-value thickness; herpesvirus of turkeys |
| IV | ichthyosis vulgaris; initial visit; interventricular; intervertebral; intravaginal; intravascular; i... |
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