中间位置

Longfei I said that Zheng He's fleet in the use of the compass also combine indigenous methods, one known as "water law", that is, moon and stars refer to the wind direction and trend of such factors, in the middle of the compass, one bowl, bowl of water, and then fish-shaped needle float on water, to maintain a balance, that is able to determine the direction and the location of boat.

席龙飞介绍说，郑和下西洋船队在使用罗盘时，还结合土办法，一种称为&盛水法&，即参考日月星辰的方位及风向潮流等因素，在罗盘中间放一个碗，碗里盛水，然后将鱼形磁针浮于水面，保持平衡，即能确定行船的方向及位置。

Through the intermediate gear Z12, the elevator shaft's gear Z13 and shaft are driven to turn, then via friction cone clutch or planetary mechanism the drum obtains six hoisting speeds.

a、冲击钻进：将变速箱右手柄板至&卷扬&位置，变速箱Ⅲ轴齿轮Z8与Ⅳ轴的齿轮Z10啮合，经中间齿轮Z12带动升降机轴上齿轮Z13及轴旋转，通过锥形摩擦离合器或游星轮机构使卷筒获得六种提升进度

In order to improve the efficiency, an implementing scheme (according to the distribution of strain energy density) was suggested when to consider the fact that the high gradient usually appears only in a very local region, especially in the case of huge amount of computation. All programming has been finished on the platform of commercial codes Mathmatica and Fortran.4. A number of numerical examples and applications were presented to verify the proposed Bezier-Based Element Method. The engineering cases include: the belt die for diamond synthesize, the main frame of wire-rounded press, the hydraulic cylinder of open die forging press. The numerical results show that the BBEM has some good performances.

通过大量的数值算例来考证所构建的各种类型单元，并应用于人造金刚石年轮模具、钢丝缠绕预应力机架和液压机工作缸等实际问题的结构分析；结果表明：所构建的Bezier耦合单元具有描述较大梯度变化场(如位移场、应力应变场等)的能力，该方法不改变单元的大小和形状，保持单元的自由度数不变，而通过调节中间可动节点的位置改变单元内部的场分布，只需少量单元即可较精确地模拟较大的梯度变化；可为有效求解高梯度问题提供新思路，对实际工程应用具有重要意义。

A number of numerical examples and applications were presented to verify the proposed Bezier-Based Element Method. The engineering cases include: the belt die for diamond synthesize, the main frame of wire-rounded press, the oil cylinder of open die forging press. The numerical results show that the BBEM has some good performances. With few elements, the BBEM can lead to a high accuracy. If using same DOFs, the computing precision of BBEM is remarkable higher than that of the conventional FEM.

通过大量的数值算例来考证所构建的各种类型单元，并应用于人造金刚石年轮模具、钢丝缠绕预应力机架和液压机工作缸等实际问题的结构分析；结果表明：所构建的Bezier耦合单元具有描述较大梯度变化场（如位移场、应力应变场等）的能力，该方法不改变单元的大小和形状，保持单元的自由度数不变，而通过调节中间可动节点的位置改变单元内部的场分布，只需少量单元即可较精确地模拟较大的梯度变化；可为有效求解高梯度问题提供新思路，对实际工程应用具有重要意义。

The Foetal Position Bed is even more demanding: you either lie in exactly the correct way, or you fall off - there is no middle ground.

胎儿位置的床是更加费力气：您也要躺在正确的对的地方，或者没有中间地带你会掉下来。

Converted the cutting force and gravities of every parts of the machine tool on the integration slant machine bed for a typical condition,and gain load parameters on the integration slant machine bed when cutting positions are located at both ends and the middle of the work-piece.

论文对一体斜床身进行三维实体建模，把典型工况下的切削力、床身上各机床零件的重力折算到一体斜床身上，得到切削位置分别位于工件两端和中间时一体斜床身载荷参数。

In this paper,a three-dimensional model of integration slant machine bed was established.When cutting force and gravities of all parts of the machine tool are converted under a typical condition,bed load parameters on different cutting positions are gained.

对一体式斜床身进行三维实体建模，把典型工况下的切削力、床身上各机床零件的重力折算到一体式斜床身上，得到切削位置分别位于工件两端和中间时一体式斜床身载荷参数。

The web clamping mechanism divide into 2 groups: one side is screw hand wheel operation, the other side is hydraulic cylinder operation, and equipped with flange guiding rolls on entry/exit side of machine – by manual adjustable which rolls' pitch upon width of flange.

腹板夹紧机构分为二组，一侧用丝杆手轮操作，另一侧用液压油缸，实现工件夹紧，在机器前后各有一组翼板导轮–用手调整距离，致使工作时腹板基本处於主传动轮中间对称位置上。

Any model of the quarternary structure of RubisCO should have the small subunit placed in a protected position among the large subunits with only limited area exposed to the outer surface of the holoenzyme.

任何RubisCO的四级结构模型都应将小亚基置于大亚基中间受保护的位置，一部份小亚基可暴露于全酶分子表面。

I then encountered this curious flock of sheep with the single black example taking its position prominently mid-front and staring at me.

碰巧遇到了这群好奇的绵羊，其中唯一的一只黑羊站在羊群中间正前的位置并一直望着我。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。