The ball bearing lead screw made in this machine can reach the standard demand of P4 grade ( GB/ T17587-1998) precision and satisfies the daily production and machining needs very well.

Finally, established the mathematical model of the motor and mechanical screw transmission in the electric parking brake system, and build simulation platform in matlab and do the simulation and analysis.

最后，建立了电子驻车制动系统中电机和丝杆传动机构的数学模型，并在matlab中搭建了仿真平台进行了仿真分析。

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The BP neural network used the wear-self-compensation mathematics model of the relationship of tribology characteristic with load of the heavy load screw-nut pairs was established.

用BP人工神经网络建立了重载丝杆螺母副的摩擦学特性与载荷之间关系的磨损自补偿数学模型。

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The Study and Realization of Double Leads-crew 3D Parametric Modeling Based on UG

基于UG的双头丝杆三维参数化建模技术研究与实现

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The Design of PLC AC Servo Control System for Copper Ingot Vertical Screw Semi-Continuous Casting Machine

铜锭丝杆立式半连续铸造机PLC交流伺服控制系统设计

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Imported high precision ball screw, the knife precision.

进口滚珠丝杆精度高，下刀精确。

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Bottle gripping and conveying device adopts linear guide, ball screw and servomotor as drive assembly, can accurately capture and transmission.

瓶体抓取和传送装置以直线导轨、滚珠丝杆和伺服电机为驱动组合，可精确实现瓶体的抓取和传送工作。

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Peter Kenyon-Manages to sell snake a replica Chelsea top, and other things he really does not need, like Chelsea-branded football boots.

肯扬――把一座仿制的切尔西奖杯和其他一些他并不真正需要的东西（比如一双印有切尔西标志的球靴）卖给了蛇。

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The result of analyzing acid degradation of Cell Coats System of plant explants cultured in acid medium were the key factors to genesis of plant cell dedifferentiation.

研究发现在酸性培养基上植物材料的细胞包被系统发生酸性降解是细胞发生脱分化的关键环节。

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This indicated that the MADS-box genes played important role not only in tissue and cell differentiation, but also in cell dedifferentiation.

并非仅仅局限于组织细胞的分化，它们在细胞的脱分化中同样起着重要的作用。

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So erythroblasts provide a good model for the study of cell differentiation and dedifferentiation.

因此红系细胞是研究细胞分化与癌变的良好模型。

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Grafting is a gardening technology, it includes the important theories in the whole surviving process, such as cell dedifferentiation, cell differentiation and so on. The problem without improved variety and inability horticulture are the key step to hinder the development of Carya cathayensis industry.

嫁接是一门园艺技术，其成活过程包含细胞脱分化、再分化等重大理论问题。

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A preliminary study on cell dedifferentiation in cultured chondrocytes

软骨细胞培养过程中细胞反分化的研究

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Recent researches found that cell fusion achieve effective reprogramming of cells function.

最近的研究表明细胞融合作为一种有效的再调控细胞功能的方法，得到广泛关注。

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The medicine prize must, at some point, honour Shinya Yamanaka for cell reprogramming, though Britain's Sir Alec Jeffreys is in contention for DNA fingerprinting.

医学奖某些时候一定会因为细胞重新编程奖励Shinya Yamanaka，虽然英国爵士亚历克•杰弗里斯也在用DNA指纹竞争这一奖项。

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Based on the ANSYS analysis software and simulation of the strength test, it was quantitatively proved that increasing the chamfering on the slot root of the rail could obviously reduce the stress concentration and enhance the intensity of the launcher housing.

基于ANSYS分析软件平台以及模拟强度试验对导轨撕裂部位进行强度分析，定量说明了此圆角增大可以明显改善导轨槽处的应力集中，增大某发射装置壳体的强度余量。

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Experiments were carried on the guide within level, oblique and vertical, respectively. Matlab was used to achieve curve fitting for PC angle and displacement data, and perpendicularity errors of the guide was shown in the form of intuitive chart.

分别进行了导轨平放、斜放和垂直实验，用Matlab软件对传到上位机倾角和位移数据进行曲线拟合，以直观图的形式将导轨垂直度误差呈现出来。

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Positioning system, included the stepper motor driver X axis, Y axis and Z axis guide control module, rotating test platform, used a laser device accurate positioning waiting forinspection/ calibration instrument of test points.

导轨定位系统，包括步进电机驱动X轴，Y轴，Z轴导轨控制模块，可旋转测试平台，利用激光定位仪精确定位待检定/校准仪器的测试点。

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The low coefficient of friction of the SBC linear guide allows smaller drives to be used and contributes to energy savings.

由于SBC导轨摩擦系数小，可使驱动装置小型化，并同时减小电力损耗。

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This paper introduces performance test of TSF soft strip for guideways, and its use and effect.

本文介绍了TSF导轨软带的性能测试、应用方法和应用效果。

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The control of linear guided stage and image capturing system in the novel Long Trace Profiler ( LTP) are discussed.

讨论了最近研制成功的新型大量程长程面形仪（LTP）中精密线性导轨扫描、定向移动以及高精度任意步长等运动的控制；

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