| 释义 |
S1
S1Symbol for first heart sound.S1 First heart sound, which corresponds to the closure of the mitral and tricuspid valves, which is a long, low, “lubb” that occurs during systole. See S2, S3, S4.S1Abbreviation for first heart sound. FinancialSeeForm S-1S1
| Acronym | Definition |
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| S1➣Secondary 1 (schools; Hong Kong) | | S1➣Supplement 1 (to a document or publication) | | S1➣Starboard 1 (US NASA) | | S1➣Adjutant (Army) | | S1➣Personnel Office (USMC) | | S1➣First Heart Sound | | S1➣Subfragment 1 (biophysics) | | S1➣Sleep Mode 1 (high-energy computer power-down state) |
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