“downhole junk”的概念、定义、翻译、参考文献-科学参考

单词	downhole junk
释义	downhole junk Encyclopedia 工学钻井复杂事故种类释 downhole junk井下落物钻井时，形状不规则且无打捞部位可与打捞工具连接的物体（如钻头牙轮、刮刀片、井口工具等）落入井内的现象。
随便看	Legendre Fenchel transformation Legendre-Fenchel transformation Legendre form Legendre formula Legendre function Legendre function of the first kind Legendre function of the second kind Legendre-Gauss quadrature Legendre geometry Legendre identity Legendre-Jacobi elliptic integral Legendre-Jacobi standard form Legendre manifold Legendre modulus Legendre necessary condition Legendre normal form Legendre polynomial Legendre polynomials Legendre quadratic reciprocity law Legendre quadrature Legendre relation Legendre series Legendre sum Legendre symbol Legendre theorem

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