“leapfrog system”的概念、定义、翻译、参考文献-科学参考

单词	leapfrog system
释义	leapfrog system [`lēp´fräg ´sis·tǝm] ^{MINING ENGINEERING} A system used in mining coal on a longwall face; self-advancing supports are used, with alternate supports advancing as each web of coal is removed.
随便看	coefficient of performance coefficient of permeability coefficient of potential coefficient of reflection coefficient of resistance coefficient of restitution coefficient of rigidity coefficient of rolling friction coefficient of sliding friction coefficient of static friction coefficient of strain coefficient of superficial expansion coefficient of thermal expansion coefficient of turbulence coefficient of variation coefficient of velocity coefficient of viscosity coefficient of volumetric expansion coefficients of form coelacanth Coelacanthidae Coelacanthiformes Coelacanthini Coelenterata coelenteron

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