| 1. | Whether the locating datum is chosen correctly or not influences the improvement of the machining precision greatly
摘要定位基准选择正确与否，对于提高机械加工精度有着重要影响。 |
| 2. | The article lays stress on discussing the choice of the locating methods , the locating styles and the locating datum for the workpiece
本文着重探讨工件的定位方法、定位形式和定位基准的选择。 |
| 3. | The segmentation of heart sound signal is the first step of analysis and the most important procedure in the automatic diagnosis of heart sounds
心音分段是建立心音决策系统的基础和前提，其目的是定位心音的主要成份，为特征提取与模式识别提供定位基准。 |
| 4. | ( 2 ) under the base of studying the typical location plans of prismatic parts , process model and fuzzy comprehensive evaluation model of location datum selection are established
( 2 )在分析箱体类零件典型定位方案的基础上，建立了定位基准选择的过程模型和综合评判模型。 |
| 5. | When machining parts with bore as positioning reference , if clearance fit positioning is adopted , machining accuracy is certainly affected due to the existence of clearance
摘要在精加工以内孔为定位基准的零件时，所用芯轴类工装如果采用间隙配合定位，由于定位间隙的存在，必然影响零件的加工精度。 |
| 6. | A correct analysis and evaluation have to be made in the course of selecting position datam through making an approach to the technology analysis of brake block and improving programme
摘要通过制动瓦零件的工艺分析及改进方案的探讨，说明在选择定位基准的过程中，必须对定位基准的缺陷情况有一个正确的分析及评价。 |
| 7. | On the basement , the paper deeply researches the following problems : digital signal process , arithmetic model , error analyzing and so on . firstly , considering the single probe system ' s datum error , the paper puts forward a double probe system and modifies the datum error
第一，针对内螺纹单针测量系统存在的定位基准误差，提出了双针测量的体系结构，并利用双测针结构对定位误差进行修正。 |
| 8. | Based on analysis relationship of which the shifting direction of position datum is or not is to the distance dimensions between process datum and position datum , have researched on method define the sing about plus or minus within the calculating formula of the machine tool ' s fixture position error
由分析机床夹具定位基准的移动方向与工序基准同定位基准间的距离尺寸无关或有关两种情况，探讨确定机床夹具中的定位误差计算式中加、减符号的方法。 |
