查询词典 accuracy grade

However, it is one of the topics worthy of study that how the results of GPS survey that is based on the normal line can be converted to be compatible with the traverse survey inside tunnel s that is based on the plumb line, so as to minimize the influence of the plumb line deflection on the transverse break-through accuracy of tunnels.

但是，如何将以法线为准的地表GPS成果改换到与以垂线为准的洞内导线测量相符合，从而解决好垂线偏差对隧道贯通精度的影响，是一个值得探讨的问题。

However, it is one of the topics worthy of study that how the results of GPS survey that is based on the normal line can be converted to be compatible with the traverse survey inside tunnels that is based on the plumb line, so as to minimize the influence of the plumb line deflection on the transverse breakthrough accuracy of tunnels.

但是，如何将以法线为准的地表GPS成果改换到与以垂线为准的洞内导线测量相符合，从而解决好垂线偏差对隧道贯通精度的影响，是一个值得探讨的问题。

The computer program overcomes the complication of manual computing transition curve and deviation value between tunnel center and line center, also reduces the amount of work, and ensures the accuracy and high speed of processing measured data.

用计算机对隧道中心与线路中心坐标进行了计算，克服了手工计算缓和曲线及隧道中心与线路中心的偏移量上的繁杂。简化了工作量，保证了测量数据处理的准确与快速。

Results showed that the common points should distribute evenly in range, the transformation points should not be far away from the common points, and the number of common points selected should be within 3 to 5 to ensure transformation accuracy.

结果表明，为保证坐标转换成果的精度，公共点应均匀地分布在测区，同时转换点不要离公共点太远。公共点的个数以3~5个为宜，一般不要超过6个。

It is concluded that the code has a higher accuracy in trail angle computation, but some scatter in loss computation.

结果表明，该程序对设计点的落后角的计算精度较高，而对损失的计算还存在一定的分散度。

The effective distance of measuring device on vehicle is from 5mm to 25mm. Through the simulation tests, if the space of track mark is 0. lm, the instrument can measure the speed ranged from 0 to 600km/h with an accuracy of ±0. lm/s.

对车载测速仪，其有效作用距离为5mm-25mm，经模拟测试，若轨道检测标志间距以0.1m计算，测量速度范围为0-600Km/h，测量精度为±0.1m/s。

Digital Track Map could improve the real-time performance and accuracy of train positioning, which has very important effects.

数字轨道地图可以提高列车定位的实时性和准确性，具有非常重要的作用。

The reliable and accurate electronic map is the foundation to improve the train positioning accuracy. Firstly, in view of "the regularization" two-dimensional model of the railroad track, the curve partition modeling is used to model the rail track to construct the electronic map database in the thesis.

可靠、准确的电子地图是提高列车定位精度的基础，本文首先针对铁路轨道的&规则化&二维模型，采用曲线分段建模的方式对不同轨道区段的数据进行建模。

The improvement of the level in track and fields is decided by the accuracy of trainingmethod.

田径运动水平的提高，很大程度上取决于训练方法的正确性。

Wire electrode based on the trajectory of the different forms of control, WEDM can be divided into three types: one is shaped by the imitation controlled cutting in line in advance and work to create the same shape by mold, when processing the workpiece at the same time rough and on the mold clamping in the machine tool table, in the process of cutting wire electrode tightly against the mold on the edge of the track for the mobile, thus cutting out and die on the same shape and precision to the workpiece; another One is the electro-optical tracking control, to carry out the cutting line, before the basis of certain parts to enlarge the proportion of drawings depicts an electro-optical tracking map-processing machines will be placed in design stage of electro-optical tracking, tracking platform Photoelectric first line of graphics has always been to follow the track of the Mexican campaign, and then through the use of electrical, mechanical linkage to control the machine tool table, together with the workpiece so相似形wire electrode relative movement, thus cutting out the same shape and design to the workpiece; again a digital control, the use of advanced automatic control of digital technology-driven machine tool in accordance with the pre-processing parameters according to the workpiece geometry pre-processing procedures for the preparation of a good CNC auto-complete processing, the production does not require appearance on board the need to map to enlarge map of the previous two form of control has a higher machining accuracy and a broad range of applications, both at home and abroad more than 95% have adopted WEDM NC.

根据对电极丝运动轨迹的控制形式不同，电火花线切割机床又可分为三种：一种是靠模仿形控制，其在进行线切割加工前，预先制造出与工件形状相同的靠模，加工时把工件毛坯和靠模同时装夹在机床工作台上，在切割过程中电极丝紧紧地贴着靠模边缘作轨迹移动，从而切割出与靠模形状和精度相同的工件来；另一种是光电跟踪控制，其在进行线切割加工前，先根据零件图样按一定放大比例描绘出一张光电跟踪图，加工时将图样置于机床的光电跟踪台上，跟踪台上的光电头始终追随墨线图形的轨迹运动，再借助于电气、机械的联动，控制机床工作台连同工件相对电极丝做相似形的运动，从而切割出与图样形状相同的工件来；再一种是数字程序控制，采用先进的数字化自动控制技术，驱动机床按照加工前根据工件几何形状参数预先编制好的数控加工程序自动完成加工，不需要制作靠模样板也无需绘制放大图，比前面两种控制形式具有更高的加工精度和广阔的应用范围，目前国内外95%以上的电火花线切割机床都已采用数控化。切割属电加工范畴，是由前苏联人发明的，我国是第一个用于工业生产的国家，当时由复但大学和苏州长风机械厂合作生产的这是最早的机型叫复旦型，我们国内在此基础上发展了快走丝系统。欧美和日本发展了慢走系统LS

Offer these 4 terms, not be to should play what paronomasia and literal idea, it is to want to be discussed jointly together with everybody, if you are an Internet practitioner, how do you see idea of these 4 nouns, if you are a type in these 4 poineering groups, whether does present type suit you, whether had wanted to change to cut a point, whether had thought confluence another type.

提出这四个名词，不是要玩什么文字游戏和字面概念，是想和大家在一起共同探讨下，假如你是一名互联网从业者，你怎么看这四个名词概念，假如你是这四个创业群体中的一个类型，现在的类型是否适合你，是否想过换一个切入点，是否想过融合另一个类型。

The algorithm can detect the eyelash effectively and can improve the classification and discriminability of iris patterns and the rate of iris recognition.

实验结果表明，该方法可以有效地检测眼睫毛，并且所得到的扇形区域包含外圆内部所有的眼睫毛像素，可以有效提高模式的可分性和虹膜的识别率。