“double board”的概念、定义、翻译、参考文献-科学参考

单词	double board
释义	double board [¦dǝb·ǝl ¦bȯrd] ^{PETROLEUM ENGINEERING} The platform from which the derrick operator works, located at a height on the derrick equal to two joined pipe lengths.
随便看	tropical rainforest tropical rainforest climate tropical rainy climate tropical savanna tropical savanna climate tropical scrub tropical wet and dry climate tropical wet climate tropical woodland tropical year tropic higher-high-water interval tropic high-water inequality tropic lower-low-water interval tropic low-water inequality Tropic of Cancer Tropic of Capricorn tropics tropic tidal currents tropic tide tropic velocity Tropiometridae tropism tropocollagen tropometer tropomyosin

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