“pay sand”的概念、定义、翻译、参考文献-科学参考

单词	pay sand
释义	pay sand [`pā ´sand] ^{PETROLEUM ENGINEERING} That portion of an oil or gas sand in which the oil or gas is found in commercial quantity.
随便看	diffferential ionization chamber diffluence diffracted wave diffraction diffractional pulse-height discriminator diffraction analysis diffraction grating diffraction instrument diffraction-limited diffraction loss diffraction mottle diffraction pattern diffraction propagation diffraction ring diffraction scattering diffraction spectrum diffraction symmetry diffraction velocimeter diffraction zone diffractometer diffractometry diffuse aurora diffuse-cutting filter diffused-alloy transistor diffused-base transistor

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