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A circle shear device for cutting holes in sheet metal as in claim 10 wherein said means for synchronous movement of said center shafts includes: a a motion linking mechanism including a plurality of gear cogs, cog belts and a jack shaft; and b said motion linking mechanism includes a hand crank to power the rotation of said center shafts.

削减的孔一个圆盘剪设备在金属板在要求10，说的中轴的同步运动的说的手段包括： a行动键路机构包括齿轮嵌齿轮、嵌齿轮传送带和副轴的复数；并且 b说的行动键路机构包括手摇把供给说的中轴的自转动力。

A circle shear device for cutting holes in sheet metal as in claim 2 wherein said means for synchronous movement of said center shafts includes: a a motion linking mechanism including a plurality of gear cogs, cog belts and a jack shaft; and b said motion linking mechanism includes a hand crank to power the rotation of said center shafts.

一个圈剪切装置切割孔在钣金象索赔2 ，那是说，是指为同步运动的说，中心轴，包括：一）一项议案，连接机制，包括多元化的齿轮cogs ，齿形带和一个千斤顶轴； B ）表示，议案挂钩机制，其中包括一台手摇电力轮换的说，中心轴。

A circle shear device for cutting holes in sheet metal as in claim 2 wherein said means for synchronous movement of said center shafts includes: a a motion linking mechanism including a plurality of gear cogs, cog belts and a jack shaft; and b said motion linking mechanism includes a motor for powered rotation of said center shafts.

一个圈剪切装置切割孔在钣金象索赔2 ，那是说，是指为同步运动的说，中心轴，包括：一）一项议案，连接机制，包括多元化的齿轮cogs ，齿形带和一个千斤顶轴； B ）表示，议案连接机制，包括一个马达驱动旋转的说，中心轴。

In order to optimize parameters of threshing system of corn thresher with different speeds threshing parts, and minimize mechanical damage of corn seeds in the course of threshing, an experiment of second order regression orthogonal rotation design was carried out with rotating speed of straight roller, feeding quantity and kernel water contents as influence factors and broken rate of kernel as major criterion.

为优化差速式玉米种子脱粒机脱粒系统的有关参数，进而降低玉米种子在脱粒过程中的损伤，该文采用二次回归正交旋转组合设计的方法，以籽粒破碎率为主要性能指标，选取直辊转速、喂入量、籽粒含水率为试验因素，对差速式玉米种子脱粒机进行了性能试验。

A pulsar is a celestial object that emits light in short burst a pulsar in the crab nebula flashes at a rate of 30 times/s,suppose the light pulses are caused by the rotation of a spherical object that emits light from a pair of diametrically opposed "flashlights" on its equator.

脉冲星是一种以短爆发形式辐射光的天体。假设球型天体赤道面上有一对&发光塔&，并且这对发光塔的联线构成赤道面的直径，进一步假设光脉冲产生于球形天体的转动，那么巨蟹座星云中的一个脉冲星的闪光频率是每秒30次。

The real tangential velocity fluctuation indicated that there existed an instability of swirling flow in the cyclone.This instability resulted in the rotation center of the swirling flow deviating from the geometric center of the cyclone,which produced the quasi-periodic oscillation of swirling flow and gave the real tangential velocity fluctuation.

瞬时切向速度的变化反映了旋风分离器内旋转流的不稳定性，这种不稳定性导致了旋风分离器内旋转流的旋转中心与几何中心不重合，旋转中心围绕着几何中心摆动，由此造成了瞬时切向速度随时间的类周期的波动变化。

In order to meet the requirements of the line/rotation clamping cylinder in CNC machine tools pneumatic clamp accompanied system.

摘 要：本文对 CLR气缸工作性能的实验研究，目的是为了满足数控机床气动随行夹具中气缸的旋转夹紧要求。

A test for deep planting earth auger reveal out the relationship between auger's rotation speed, feeding speed with its drilling resistant torque in three typical tree planting land of moving dune, sand soil and road side in the area of Keerqing.

通过对科尔沁沙地3种典型造林地，即流动沙丘、固定沙地和道路两侧的实地试验研究，得出了钻头转速、进给速度之间的相互关系及对钻孔阻力矩的影响关系。

In spite of denial and suppression of talk about the approaching cataclysms, when the earth slows and then stops in its rotation the truth will be known.

尽管否定并禁止讨论即将到来的大灾难，但当地球自转减慢，并停下来时，真相终会被人们知晓。

5Ms pulsar in SN1987A, however, we must consider the deformation energy, because the pulsars become oblate ellipsoids in the function of high speed rotation.

在§2.3中我们首先研究了脉冲星自转造成的扁率对其性质的影响，然后给出了超新星1987A脉冲星的一些可观测性质。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。