在图纸标注尺寸时，除非设计者有意标明，注在尺寸线上的数字代表的尺寸仅仅是近似的，并不代表任何精度等级。
In dimensioning a drawing, the Numbers placed in the dimension lines represent dimension that are only approximate and do not represent any degree of accuracy unless so stated by the designer.
针对目前VCM磁钢片轮廓尺寸的检测方法存在检测速度慢、精度低等问题，设计了基于机器视觉的VCM磁钢检测系统的总体结构。
The structure of inspection system on VCM based on machine vision is designed to meet the problems of dimensional inspection methods on VCM at present such as low speed, low grade precision and so on.
塑料的成型收缩率直接关系到制品的形状和尺寸精度，因此在塑料注射成型的模具设计中，迫切需要预测制品的成型收缩率。
The shrinkage of plastic products is a very important parameter and need to be forecast during the design of injection molds, which affects the shape and size precision of the products.
通过采用合理的铸造工艺，确保了其叶片型线尺寸精度、转轮表面质量及铸件内部的致密度满足了设计要求。
By adopting appropriate foundry techniques, the accuracy of dimension and shape were ensured. The surface quality and internal density of runner meet the requirements of design.
对于非椭圆截面曲臂的大型曲轴，其模具结构设计对曲轴成形后的形状尺寸精度影响极大。
The design of die structure has much influence on shape dimension and precision of the formed crank-arm with a non elliptical section.
在机械设计中，装配尺寸链的组成环公差，一般是采用等公差法或等精度法来确定。
During machine design, tolerance of unit ring in assembly dimension chain is usually determined by using either equal tolerance or equal accuracy method.
公差原则是进行精度设计时处理尺寸公差与形位公差关系的指导原则。
As guiding principles, the tolerancing principles deal with the relationship between form-position tolerance and size tolerance in precision design.
塑料模具成型尺寸的准确设计和计算，直接关系到塑料件的精度。
Precision of the plastic production directly relies on the precise design and calculation of the moulding dimensions.
不少兵器在设计和生产定型时都需要进行成套的尺寸链计算，以便对零件的可装配性进行检验，保证系统的精度要求。
Many arms demand dimensional chain calculation in process of design and finalize the design in order to test the assembly characters of the parts and assure the system precision requirement.
保证了印前设计尺寸与印刷、印后加工版尺寸精度的一致性。
And this ensures the consistency of the precision of pre-printing designed sizes with that of the post-printing processed version.
介绍了制芯方法，阐述了芯头设计、砂芯的组装及其它因素对铸件尺寸精度的影响。
This paper introduces the method of making sand core, explains the influence of the head design of sand core, assembly of sand core and other factors on the dimension precision of casting.
设计制造了专用的蜡模熔合与校正夹具，以保证模组与铸件的尺寸精度。
In order to obtain dimensional precision of wax Patterns and castings, a special fixture has been designed and Produced for correcting and assembling wax patterns.
这里分析了在安装尺寸基本确定条件下圆柱形螺旋压缩弹簧的高精度设计与调整。
The paper analyses the high precision design and adjustment of cylindrical spiral compressed spring under condition of installation dimension being ascertained basically.
由于销孔尺寸、形状和位置精度及粗糙度的要求都很高，一般都需要设计并制造高精度的镗头。
Because of the high requiring of the size, shape, position precision and roughness of pinhole, a high precision boring cutter is required to design and manufacture.
亦不应过分苛求某一环节的尺寸精度，降低设计效率。
You should not also so demand the size accuracy of any links to reduce design efficiency.
在尺寸及公差设计中，该方法简单、易行，而且可以获得高的计算精度。
The method is easy to use in dimension and tolerance design and has high accuracy.
实践证明，该挤出成型模具结构设计合理、简单，易于加工，成型的异型材满足尺寸精度要求。
The practice proves that the mold has reasonable and simple structure and operates easily, the profiles processed with this mold can meet the precision requirement.
为了满足大尺寸激光加工的精度和速度要求，本文设计了以dsp、F PGA和单片机为核心的数控系统。
To satisfy the requirements of precision and speed for large-size laser machining, a CNC system based on the DSP, FPGA and microcontroller is developed.
介绍了东风汽车车轮有限公司为开展滚型车轮生产线建设而进行的车轮轮辋滚型工艺的工序设计与模具设计，生产出的轮辋尺寸精度高，圆角减薄量小。
This paper introduces the roll forming process and mould design of wheel rim. The rim manufactured with the dies has higher dimensions precision, less reducing thickness.
结果表明，此优化设计方法可使机架总张力系数下降约58%，为提高产品尺寸精度提供了保证。
The result show that the total tension coefficient could be decreased by 58 %. It can be a guarantee for gaining higher accuracy of product.
依据概率统计的相关理论进行机构设计，即考虑构件制造尺寸的随机误差，以保证机构运动的精度在允许的误差范围内。
According to the probability and statistics theory, the mechanism is designed, that's considering the random error of the component to make sure that the motion accuracy is in the allowed error range.
在夹具设计方面采用“一面两销”的定位方案保证被加工孔的准确定位和尺寸精度。
In the jig aspect, we use the "two sells at the same face" for the localization plan. Only this way, we can guarantee the hole the accurate localization and the size precision.
在夹具设计方面采用“一面两销”的定位方案保证被加工孔的准确定位和尺寸精度。
In the jig aspect, we use the "two sells at the same face" for the localization plan. Only this way, we can guarantee the hole the accurate localization and the size precision.
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