“principal function”的概念、定义、翻译、参考文献-科学参考

单词	principal function
释义	principal function [`prin·sǝ·pǝl `fǝŋk·shǝn] ^MECHANICS The integral of the Lagrangian of a system over time; it is involved in the statement of Hamilton's principle.
随便看	grid declination grid-dip meter grid-dip oscillator grid direction grid drive grid driving power grid element grid equator grid-glow tube grid heading gridiron pendulum gridistor grid latitude grid leak grid-leak detector grid limiter grid locking grid longitude grid magnetic angle grid meridian grid metal grid modulation grid navigation grid nephosope grid neutralization

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