等级

Tolerances represent the highest commercial grade of accuracy and workmanship, and are specified for thread setting gages; X tolerances are larger than W tolerances and are used for product inspection gages.

公差是为螺纹调节规设定的，代表了精确程度及工艺方面的最好商业等级。X公差比W公差要大，用于产品检验量规。

Accuracy is stated in microns per meter of travel. Scales are specified with an accuracy grade (i.e.±5μm/m).

光栅尺的精确度等级定义如下：在任意1米测量长度区段内测量值和标准值的最大误差。

2 Unless otherwise mentioned, current transformer should be double-pipe with full distributed winding. The measuring accuracy grade and minimum capacity of all relay on taps should be 5 p 20/0.5 and 100va respectively.

3.3.3.9.6.2 除非另有说明，否则电流互感器属于具有全分布绕组的套管式，所有分接头上的继电器/测量精确等级为5 p 20/0.5，最小容量为100va。

Starting with model 700BDL action, Remington adds a stainless-steel barrel and a carbon-fiber stock, then tunes the rifle for one-minute-of-angle accuracy using match grade ammo.

与模型700BDL行动开始，雷明顿增加了一个不锈钢桶和碳纤维的股票，然后曲调步枪的一分钟的角精度等级匹配使用的弹药。

Accuracy grade ?

精度等级。。

Carry on structure analysis to the spare parts first, understand its structure characteristics to choose suitable semi-finished product and the semi-finished product manufacturing of the reasonable a craft thus;Then the technique request of spare parts carries on analysis, understanding it each process superficial accuracy grade and the surface rough degree, make it process the fixed position in the process and clip a tight way in assurance inside the scope of economic accuracy, draw up the machine of spare parts to process craft process thus and further, choose each work preface to process equipments and craft material, the assurance slices to pare dosage and craft size, computing the man-hour of each work preface settle sum.

首先对零件进行结构分析，了解其结构特点从而选择合适的毛坯以及合理的毛坯制造工艺；再零件的技术要求进行分析，了解其各加工表面的精度等级以及表面粗糙度，使其在经济精度的范围内确定加工过程中的定位和夹紧方式，从而进一步拟订零件的机械加工工艺过程，选择各工序加工设备以及工艺装备，确定切削用量以及工艺尺寸，计算各工序的工时定额。

a kind of design project of multifunction electric power quality gauged instrument based on virtual instrument is put forward in this article.this system integrates virtual instrument programming and power electronics together,to realize diverse signals of current electric power quality field allin one.the integrated signal generator unit which carries out the collection of high speed digital data,d/ a conversion and analog output in four channels,unsymmetrical synchro control fifo etc.by fpga are introduced,the flow of electric power system various signal which generates by vc programming is elaborated,and the structural design of signal amplification unit is analysed.the experiment text result shows that this gauged instrument has attained current advanced high grade of accuracy and it will accelerate the steps of electric power quality calibration because of its accuracy and versatility.

摘 要：提出一种基于虚拟仪器技术的多功能电能质量标定仪的设计方案，采用虚拟仪器编程技术和电力电子技术相结合实现集目前电能质量领域的多样信号于一体。介绍采用fpga实现高速数字量采集、d/a转换及4通道模拟量输出、非对称同步控制fifo等的集成信号发生单元，阐述利用vc编程实现的电力系统多样信号的产生流程，分析信号放大单元的结构设计。实验测试结果表明该标定仪达到目前先进的高精度等级，由于其准确性和多功能性将加快电能质量标定的步伐。

ALL LM Guide Dust cover type Drive method Retainer Seal Resistance Value MAX QZ Lubricator is available None, bellows Ball Screw None 1.5 Yes LM Guide Accuracy grade Type using standard material Standard grease Standard lubrication method Standard grease nipple Normal grade, high accuracy grade, precision grade Iron-based AFB-LF Grease Lubrication PB107 LM Guide LM block surface treatment LM rail surface trea...

全部 LM导轨部防尘罩形式驱动方式保持器最大密封垫片阻力值对应QZ润滑装置无，软式伸缩护罩滚珠丝杠无 1.2 有 LM导轨部精度等级标准材质规格标准润滑脂标准润滑方式标准加脂油嘴普通级，高级，精密级钢铁系列 AFB-LF 脂润滑 PB107 LM导轨部 LM滑块表面处理 LM轨道表面处理最低使用温度华氏。。。

ALL LM Guide Dust cover type Drive method Retainer Seal Resistance Value MAX QZ Lubricator is available None, bellows Ball Screw None 5 Yes LM Guide Accuracy grade Type using standard material Standard grease Standard lubrication method Standard grease nipple Normal grade, high accuracy grade, precision grade Iron-based AFB-LF Grease Lubrication A-M6F LM Guide LM block surface treatment LM rail surface treatm...

全部 LM导轨部防尘罩形式驱动方式保持器最大密封垫片阻力值对应QZ润滑装置无、防尘盖、风箱式防尘罩滚珠丝杠无 5 有 LM导轨部精度等级标准材质规格标准润滑脂标准润滑方式标准加脂油嘴普通级，高级，精密级钢铁系列 AFB-LF 脂润滑 A-M6F LM导轨部 LM滑块表面处理 LM轨道表面处理最低使用温。。。

ALL LM Guide Dust cover type Drive method Retainer Seal Resistance Value MAX QZ Lubricator is available None, bellows Ball Screw None 3.2 None LM Guide Accuracy grade Type using standard material Standard grease Standard lubrication method Standard grease nipple Normal grade, high accuracy grade, precision grade Iron-based AFB-LF Grease Lubrication PB107 LM Guide LM block surface treatment LM rail surface tre...

全部 LM导轨部防尘罩形式驱动方式保持器最大密封垫片阻力值对应QZ润滑装置无、防尘盖、风箱式防尘罩滚珠丝杠无 3.2 无 LM导轨部精度等级标准材质规格标准润滑脂标准润滑方式标准加脂油嘴普通级，高级，精密级钢铁系列 AFB-LF 脂润滑 PB107 LM导轨部 LM滑块表面处理 LM轨道表面处理最低使用。。。

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