查询词典 four-wheel drive

Once the structure of cohesive shaft coupler is determined, the characteristic of rotating toque can be adjusted and transferred automatically by rotation speed difference to drive one axle, that makes a tow wheel drive motor vehicle change to a four wheel drive motor vehicle easily.

粘性联轴器一经确定结构，即可通过转速差自动调节传递转矩的特性，驱动一个桥，使两轮驱动汽车轻易变为四轮驱动汽车。

According to the wheel-axle production line project of Ji" nan locomotive and rolling stock plant, this dissertation put forward "Designing of wheel-axle foundation production line and management of wheel-axle information and mainly carried on following several aspect works: According to current new technique of the domestic and international wheel-axle assembling is researched, and combining present produce condition, we have designed the machining and assembling product line of axle and wheel and non axle box rolling bearing assembling product line.

根据济南机车车辆厂轮轴工艺线建设项目，本文提出了"货车轮轴基础工艺线设计及轮轴信息化管理"研究课题，并主要进行了以下几方面工作：通过对目前国内外轮轴加工组装的新技术新工艺进行研究，结合工厂轮轴生产现状，对货车轮轴生产线进行了工艺方案设计。

Driving force of wheel on soft lunar soil is much different with wheel on the ground of the earth.Wheel sinks and slides easily on lunar soil.The driving force formula of wheel based on Bekker formula is much complex,for forecasting driving force,curve fitting based on least squares method was introduced to simplify formula driving force.The driving force can be calculated through measuring wheel sinkage and slide.

基于Bekker轮-地力学理论的车轮驱动力计算公式复杂，不适合直接计算，为实现车轮驱动力预测，为车轮驱动力优化提供计算基础，本文采用基于最小二乘法的数据拟合方法对车轮驱动力进行数值拟合计算，为实时的车轮驱动力预测提供可行的方法，从而实现对车轮驱动力的优化。

In addition, total wheel/rail contact calculation with divided rail outline method are raised. Under the condition of considering the displacement, bouncing, yaw, roll of wheelsets and displacement, bouncing, roll of rails, minimum gap between rail and wheel were calculated by the trochoid method and divided rail outline method, we can easily judge totally real contact states of the wheel/rail such as normal one-point contact, nonnormal one-point contact, two-point contact and wheel complete lift. Wheel/rail normal forces in the two contact point are respectively calculated by nonlinear Hertz contact theory, and then, result of simulation more close to reality on actual track.

另外，提出了轨廓分区法全面计算轮轨接触状态法，在考虑轮对的横移、浮沉、摇头、侧滚和左右钢轨的横移、浮沉、侧滚的条件下，可全面地分别计算左右侧轨顶和轨侧区域与车轮的最小轮轨间隙量，以此来判断轮轨的真实接触状态：正常的一点接触、非正常的一点接触、两点接触和车轮完全悬浮，并根据非线性赫兹接触理论分别求得两接触点处的轮轨法向力，从而使仿真结果更接近于车辆在实际线路上的运行状态。

In this system,we define the left wheel as the norm wheal,the right is the differential wheel,controlling the benchmark wheel is to controll the speed,another one is to reduce the friction between the wheel and the ground when turning steer.so as to make the wheel purely rolling.

电动汽车电子差速系统中的左轮定义为基准轮，右轮定义为差动轮，控制基准轮转速是为了控制电动汽车的运行速度，控制差动轮转速是为了减小电动汽车转向时汽车车轮的滑动摩擦，尽量使电动汽车车轮运行在纯滚动状态。

The result proves that not only the grinding wheel's cost is lower, but also the effect is better than ordinary wheel in hardness, strength density and metallograph. The wheel has good abilitg of keeping grinding material and good grinding property. It can satisfy reguest of ELID grinding technology for wheel's selectrolytic and forming film. It is an ideal, practical and special grinding wheel of ELID grinding.

实际应用结果表明，该砂轮成本低、效果好，在硬度、强度、密度、组织等物理性能方面较商品砂轮有较大提高，并具有很好的把持磨料的能力和良好的磨削性能，充分满足ELID磨削技术对砂轮电解生膜的要求，是一种较为理想的实用的ELID磨削专用砂轮。

It specializes in manufacturing of diamond cubic boron nitride grinding wheel with various specifications and the products include diamond resinoid bonded grinding wheel, CBN resinoid bonded grinding wheel, diamond electroplated grinding wheel, diamond bronze grinding wheel, diamond paste, diamond grinding head and tungsten steel lathe tool used for machining of various metals.

产品介绍：我厂技术力量雄厚，设备齐全，工艺精湛，专门生产各种规格的金刚石，立方氮化硼砂轮，产品包括金刚石树脂砂轮，CBN树脂砂轮，金刚石电镀砂轮，金刚石青铜砂轮，金刚石研磨膏，金刚石磨头，和加工各种金属的钨钢车刀http：//www.86wheels.com

It specializes in manufacturing of diamond cubic boron nitride grinding wheel with various specifications and the products include diamond resinoid bonded grinding wheel, CBN resinoid bonded grinding wheel, diamond electroplated grinding wheel, diamond bronze grinding wheel, diamond paste, diamond grinding head and tungsten steel lathe tool used for machining of various metals.

我厂技术力量雄厚，设备齐全，工艺精湛，专门生产各种规格的金刚石，立方氮化硼砂轮，产品包括金刚石树脂砂轮，CBN树脂砂轮，金刚石电镀砂轮，金刚石青铜砂轮，金刚石研磨膏，金刚石磨头，和加工各种金属的钨钢车刀http：//www.xhxwheels.com

It specializes in manufacturing of diamond cubic boron nitride grinding wheel with various specifications and the products include diamond resinoid bonded grinding wheel, CBN resinoid bonded grinding wheel, diamond electroplated grinding wheel, diamond bronze grinding wheel, diamond paste, diamond grinding head and tungsten steel lathe tool used for machining of various metals.

商品说明：我厂技术力量雄厚，设备齐全，工艺精湛，专门生产各种规格的金刚石，立方氮化硼砂轮，产品包括金刚石树脂砂轮，CBN树脂砂轮，金刚石电镀砂轮，金刚石青铜砂轮，金刚石研磨膏，金刚石磨头，和加工各种金属的钨钢车刀http：//www.86wheels.com

The factory possesses abundant technical personnel, complete equipment and consummate technology. It specializes in manufacturing of diamond cubic boron nitride grinding wheel with various specifications and the products include diamond resinoid bonded grinding wheel, CBN resinoid bonded grinding wheel, diamond electroplated grinding wheel, diamond bronze grinding wheel, diamond paste, diamond grinding head and tungsten steel lathe tool used for machining of various metals.

我厂技术力量雄厚，设备齐全，工艺精湛，专门生产各种规格的金刚石，立方氮化硼砂轮，产品包括金刚石树脂砂轮，CBN树脂砂轮，金刚石电镀砂轮，金刚石青铜砂轮，金刚石研磨膏，金刚石磨头，和加工各种金属的钨钢车刀http：//www.86wheels.com 磨削是目前半精加工和精加工的主要加工方法之一，砂轮则是磨削加工中重要磨具，砂轮一般安装在平面磨床、外圆磨床和内圆磨床上使用，也可安装在砂轮机磨刀机，万能磨刀机上刃磨刀具。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。