查询词典 a large wheel

Abstracts: MMB1320B-type cylindrical grinder applies hydraulic pressure Systematic and electricity-control-mode drive to realize the motion of the working table and emery wheel rack.. This article improves the method of electricity control and uses PLC soft ware instead of a large amount of centre relay and time relay of relay control system to realize the control of hydraulic pressure so that we can save energy and enhance efficiency.

摘 要： MMB1320B 型外圆磨床采用液压系统和电气控制方式驱动以实现工作台和砂轮架的动作，本文对其电气控制方式加以改造，用 PLC 软件取代继电器控制系统中大量的中间继电器、时间继电器等以实现液压系统的 PLC 控制，从而达到节能增效的目的。

The processing principle and method of slotting gear--grooves for big modulus gear wheel with combined milling cutter on a large--scale hobbing machine was put forward in the paper.

提出了在大型滚齿机上。用片铣刀组粗切大模数齿轮齿槽的原理及其工艺。使大模数齿轮的加工效率提高1～2倍。为大模数齿轮的高效加工开创出一条新的途径

The Jinjiang Pleasure park is a large pleasure park, the first of its kind in Shanghai,into which it has introduced from abroad 18 kinds of pleasure facilities, such as single ring sliding car, single rail train ,swivel wooden-horses,fihgters, aerial swiveling chairs,lotus-flower plate, single rail rail eyeles, parachutes, animal-shaped cars, satcer-shaped boats,bumping cars, inertia-sliding cars,laser-gun chooting and UFO wheel and so on.

锦江乐园是上海市的第一家现代化大型游乐园，从国外引进了18种大型游乐设施：单环滑车、单轨列车、木马游转、空战机、空中转椅、莲花盘、脚踏单轨车、降落伞队、动物小车、飞碟船、碰碰车、惯性滑车、激光设计和UFO转轮等。

Moreover, the hot compressive deformation behavior of the RS/PM AZ91 magnesium alloy and AZ91 alloy matrix composite were also investigated, the conclusions are drawn as follows:1. The processing parameters of the atomization-twin rolls quenching technology were optimized as follows: the diameter of the nozzle 1mm, the wheel velocity 25m/s, the pressure of atomization gas 0.3MPa and Ar gas for melt injection 0.1MPa. The RS AZ91 alloy flakes exhibited fine and uniform microstructures. When the flakes were extruded at 673K, extruded velocity of 0.1mm/min and extrusion ratio of 25:1,the magnesium alloy rods with clean surface, uniform dimension and excellent mechanical properties were obtained.2. The RS AZ91 magnesium alloy powders prepared by atomization-twin rolls quenched technology exhibited fine equiaxed grains with the grain size of 1-3μm, the phase constituent included supersaturate solid solution phaseα-Mg and miner fineβ-Mg_(17)Al_(12) phase. The as-extruded materials also exhibited equiaxed grains with the size of 5-7μm and a large number of fineβ-Al_(12)Mg_(17) and fewer AlMg_2Zn phases were detected in the alloy.

本文还研究了快速凝固/粉末冶金AZ91镁合金热压缩变形流变应力行为，快速凝固/粉末冶金法原位生成Mg_2Si增强AZ91镁基复合材料，经过系统的研究，获得如下结论：1、雾化-双辊急冷法在下列工艺参数组合下：双辊线速度25m/s；喷嘴直径1mm；熔体压射压力0.1MPa；雾化气体压力0.3MPa。，可获得宏观尺寸细小、微观组织均匀细小、综合性能优良的的快速凝固AZ91镁合金细碎箔带，快速凝固箔带在挤压温度为673K、挤压速度为0.1mm/min，挤压比为25：1时，可获得的外表光洁、尺寸均匀、组织性能优异的镁合金棒材。2、雾化-双辊急冷法制备的AZ91镁合金粉末态为细小等轴晶组织，晶粒尺寸1-3μm，组织为α-Mg过饱和固溶体和微量的细小β-Mg_(17)Al_(12)相组成；粉末挤压棒材为等轴晶组织，晶粒尺寸5-7μm，组织中含有大量细小的β-Al_(12)Mg_(17)以及AlMg_2Zn析出相，室温力学性能，抗拉强度383MPa，屈服强度275MPa，断后伸长率7.5%。

It consists of three parts firstly,a large number of meshing data were measured out through three dismountable teeth installed along the radial direction of rigid wheel under loading status,secondly,the experimental curves of tangential force t and of radial force r inside meshing zone were gained by means of method of mathematica...

包括三部分：首先，在载荷状态下，通过安装在刚轮径向方向上三个可装、拆的活齿，测得大量的啮合数据；其次，通过数学统计方法获得啮合区内切向力Ft和径向力Fr的实验曲线；最后，应用函数逼近法获得载荷区内载荷分布方程

The wheel is run on a large and powerful electric motor with pulleys.

该轮是运行在大国和强国电机与滑轮。

In order to enhance its core competitiveness in the dredging market, GDC invests a large amount of money on equipment upgrading. The 9000 m3 TSHD, 3000 m3/h CSD/Bucket Wheel Dredger, 30 m3 Grab Dredger as well as other dredgers under construction could increase the annual dredging capacity of the company tremendously.

为适应未来疏浚市场的发展需求，公司近年已建成或在建新一批大型、先进设备，如9000m3舱容以上的自航耙吸式挖泥船和3000 m3/h以上的绞吸/斗轮式挖泥船，以及30m3以上的抓斗船，届时公司的年疏浚能力将进一步大幅提高。

A large chain wheel is fixed on the inner side of the axle.

如对其所有的链轮进行调整车速更快。

Buses and coachers are usually 4-wheel rigid vehicles, but a large number of wheels and axles can be used.

公共汽车和长途汽车通常为四轮刚性车辆，但有许多轮轴可选用。

Buses and coachers are usually 4-wheel rigid vehicles,but a large number of wheels and axles can be used.

这里的意思是一般的汽车及拉的马车是用四个轮子的，但是也可以用很多轮子及轴承的，就像有些车有六个或者八个轮子，像有些大货车，轮子更多的。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷