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Analyzing the calculating process of belt conveyor with high angle theoretically, starting from its theoretic calculate the cross sectional area of materials and peripheral force, shaft power of drum, power of motor, using point by point method to get the resultant strain of every drum and torsion of driving drum, calculating the maximum strain and the maximum reverse stopping torque, to give the support on theory for using belt conveyor with super-long distance, high angle under the coal mine.

本文针对长运距、大倾角、高强度带式输送机设计过程中存在的问题,从四个方面对大倾角带式输送机进行分析研究:从理论上解析大倾角带式输送机的计算过程,从大倾角带式输送机的理论入手,详细计算物料的横截面面积、圆周力、滚筒轴功率和电机功率,利用逐点计算法计算各个滚筒的合张力以及传动滚筒的扭距,计算出胶带的最大张力和最大逆止力矩,给长运距、大倾角皮带机在煤矿井下的使用给予理论上的支持。

Any of various devices for engaging and disengaging two working parts of a shaft or of a shaft and a driving mechanism.

传动轴,驱动半轴从马达传送动作给机器的短轴,尤指汽车

As a result of the transmission of traction roll will to a certain speed, tension from the pull-out feeding axis and force it into the business card printing and membership card Studio, this part of the tension than business card printing and membership card Studio tassion, usually attached to a feeding on the axis of brake to control tensility.

由于牵引辊的传不静不兵塑料薄膜以必不退的不缓率、压辛从给料轴拉不入并送入制卡和会员卡制息部,这局部的压辛给不小于制卡和会员卡制息部的压辛,凡是用不停在给料轴上的制不静器来把持压辛。

Combining theoretical analysis with experimental demonstration,the mathematical models of the quadrant and the mechanical gravity- pendulum tilt sensor are built.

通过理论分析建立了象限仪读数和机械重力摆式倾斜传感器输出的数学模型,运用数学推导的方法描述了火炮耳轴倾斜随火炮纵倾的关系,从理论上阐明了用象限仪标定炮耳轴倾斜传感器产生误差的原因及其量值,通过试验进行了验证,并提出了解决方法。

The results indicated that the axial velocity distribution of the mixture was a parabola-like curve along the radius and the change of the velocity was larger in the region within 0%~25% of the pipe width (about 15 mm) from the pipe walls, but smaller in other positions. The vortex changed greatly in the region within 0%~16.7% of the pipe width (about 10 mm) from the pipe walls and then decreased gradually to zero at the pipe center.

结果表明,混合颗粒的轴向速度呈类似抛物线状分布,在靠近管壁约0%~25%管宽范围内,即在试验装置距管壁约15 mm范围内,轴向速度变化较大,其他位置处变化较小;涡量在靠近管壁约0%~16.7%管宽范围内,即在试验装置距管壁约10 mm范围之内变化明显,从距离管壁10 mm到竖直管中心涡量逐渐减小到接近为零。

A rattling tempest was churned up as the percussionists drummed three huge scrolls of paper which cascaded from the ceiling to the stage floor, while intriguing sounds were created with all manner of paper products, from cardboard tubes and boxes to pompoms, paper bags and a paper umbrella...

演出现场,三个从天花板垂落至舞台的巨大纸轴俨然成了打击乐器,在打击乐手的敲击下,翻滚、跃动的纸轴营造出一场惊天动地的暴风雨。

If the axial flow pump are used for diesel or gasoline engine power, and can change the size of variable-speed throttle; if the axial flow pump with the power machine is linked to the use of triangular belt or flat belt drives the overhead, you can change to variable speed drive pulley diameter, the replacement of driving wheel or the driven wheel can be, the purpose is to change the transmission ratio.

如果轴流泵是采用柴油机或汽油机作动力的,可改变油门大小来变速;如果轴流泵与动力机相联是采用三角皮带或平皮带间接传动装置的,则可以改变传动皮带轮直径来变速,更换主动轮或从动轮都可以,目的是改变传动速比。

Key parts are imported directly from overseas which are advanced and reliable* Integral casting machine body to ensure high rigidity and stability* Precision processed working table with hard chrome-plated surface prolong the life time of the machine* Japan made MIKI PULLEY an infinitely speed adjuster with 6 - 25m/min infeed speed* Fully automated for entire infeed process* Each high precision spindle is supported by two bearings which makes spindle more stable.

配备有HFB523设备的经济型机械,但是消耗了更少的电压。*关键部件直接从海外进口,先进可靠。*机身整体铸件,保证高坚韧度和稳定性。*精加工工作台表面镀硬铬合金,能延长机器的使用寿命。*日本制造MIKI PULLEY,带6―25m/min的进给速度的一款无限速度调节器。*整个进给程序完全自动化。*每个高精度的轴都由两个轴承支持,使轴更稳定。

According to the resonance of mechanical machining,the relationship between the spindle speed of lathe and the surface quality of the workpieces was studied on turning a long and thin axis on the lathe.

从机械加工中共振的角度出发,研究细长轴车削加工时车床主轴转速与工件表面质量的关系;并以CA6140车床为例,讨论刚性主轴的临界转速,提出细长轴车削加工时车床主轴的最佳转速范围,避开共振区,从而提高工件的加工精度,保证工件的表面质量。

The results show that the growth rate of tetrapod ZnO is controlled by spiral growth and its crystallization is via VLS model. The condensation of tiny zinc droplets in zinc vapor is the key factor of the formation of tetrapod ZnO. The growth steps are formed on the terminated faces as zinc diffuses outwards and the elongation of whiskers continues until zinc inside the droplets is depleted. VS crystallization, which has little effect on the elongation growth, takes place on side faces of the whiskers and consequently makes the whiskers radius increase.

结果表明: T-ZnO晶须的结晶作用是气-液-固方式,晶须生长受螺旋生长机理控制;锌蒸气中产生凝聚生长的锌液滴是制备T-ZnO晶须的关键,锌从液滴内向外扩散在晶须的端面产生生长台阶,随着液滴内的原子向外不断扩散,针体部分就不断地伸长生长,当液滴内的原子全部消耗尽时,晶须便不再发生轴向生长;气-固方式的作用主要是促进晶须棱面生长而使晶须变粗,对轴向生长几乎没有影响。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。