“main haulage level”的概念、定义、翻译、参考文献-科学参考

单词	main haulage level
释义	main haulage level Encyclopedia 工学开拓工程释 main haulage level集中运输水平在地下矿山生产中，将多个中段或分段采出的矿石集中搬运至破碎站、竖井或斜坡道的输出作业水平。又称主要运输水平。
随便看	system of neighborhoods system of non-homogeneous linear equations system of notation system of numbers system of numeration system of oblique coordinates system of official costume system of one-time payment system of open administrationa of villager affairs system of ordinary differential equations system of orthogonal coordinates system of orthogonal functions system of orthogonal polynomials system of orthonormal functions system of orthonormal polynomials system of ownership of the means of production system of paid use of natural resources system of parabolic equations system of parabolic equations; parabolic system system of parabolic partial differential equations system of parallel forces system of parameters system of partial differential equations system of particles system of periods

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