“fine gravel”的概念、定义、翻译、参考文献-科学参考

单词	fine gravel
释义	fine gravel [¦fīn `grav·ǝl] ^GEOLOGY Gravel consisting of particles with a diameter range of 1 to 2 millimeters.
随便看	punched card punched-card accounting machines punched-card equipment punched-card field punched-card interpreter punched-card reader punched-card reproducer punched-card sorter punched-plate screen punched tape punched-tape reader punching punching rate punching station punching track punch knife punch position punch press punch radius punch tape punch-tape code punch-through punctate punctuated equilibrium punctuated evolution

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