中层带也被称作中层浮游区或黄昏区。这一区域处于海平面下200米至1000米的位置。
为了分析热轧带钢在卷取过程中层间摩擦力分布和确定卷筒胀径时最小带卷层数，利用有限元的手段再现了热轧带钢卷取的全过程。
In order to analyze the distribution of internal frictional force and determine the least layer number for expansion of coiler, the coiling process was studied with FEM.
本文介绍一种计算带分离的大中层弦比、小后掠角机翼低速气动特性的近似方法。
In this paper, an approximate method is presented to compute low-speed aerodynamic characteristics of high-middle aspect ratio and low sweep Angle wing with separation.
控矿因素为地层、岩浆岩及构造，其中层间断裂与接触带构造是主要的容矿构造。
Control factors of mineralization are strata, magmatites and structure. Interformatinal faults and contract zone are mainly including ore structures.
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