Greek letter, from Hebrew, literally "little mouth." As the name of the mathematical constant, from 1841 in English, used in Latin 1748 by Swiss mathematician Leonhart Euler (1707-1783), as an abbreviation of Greek periphereia "periphery." For the meaning "printer's term for mixed type," see pie (3).
實(shí)用例句
1. We proposed P 2 I algorithm combined with proportional controller and PI controller.
提出了結(jié)合了比例控制器和PI控制器 特點(diǎn)的P2I算法.
來自互聯(lián)網(wǎng)
2. The carbonization and the graphitization of PI filament were described.
敘述了PI原絲的碳化和石墨化過程.
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3. Some AQM algorithms, such as REM and PI, explore this aspect.
