Perpendicularity - is the condition of a surface, axis, or line, which is 90 deg. From a datum plane or a datum axis.
垂直度-条件是表面，轴，或线，这是90度的基准平面或基准轴。
The precondition of RG line being as datum of time-depth conversion is that the RG line is equivalent to the smooth line of surface elevation.
RG线作为时深转换基准面的前提是RG线等效于地表高程的平滑线。
However, during checking of the total axial run-out. deviation, the positions of the dial indicator are along a guiding (straight) line perpendicular to the datum axis A (see 18.7.8.3).
然而，在检查全轴向跳动时，百分表的位置是沿着垂直于基准轴线A的（直）引导线（见18.7.8.3）。
This paper also presents a method to solve the tunnel axis displacement on line caused by angle error between tube center axis and datum of joint.
分析了对接面与管段中心线夹角误差对沉放后线路位置的影响，提出了控制隧道轴线偏差的措施；
Use to indicate a datum target area, line or point.
用于指示基准目标区域、线条或点。
If the element being tested with a tolerance requirement is a contour line or surface, point the arrow and datum symbol to the contour line or surface, and keep it away from the dimension line.
当具有公差要求的被测要素为线或平面时，将指引线箭头和基准符号指在线或平面上，且必须与尺寸线错开。
The coaxiality tolerance assesses the deviation of the axis from the datum axis, while the radial run-out tolerance assesses the deviation of the circumference line from a coaxial circle.
同轴度公差评估的是轴线相对于基准轴线的偏差，而径向跳动公差则评估的是圆周线相对于同轴圆的偏差。
In this paper the distortion of image collimating system is analyzed, and then an on-line self-calibration method with double-frequency laser length measuring result as length datum is presented.
通过对图像瞄准系统中的畸变分析，提出以激光长度测量值作为长度基准的成像系统在线自标定方法。
In each cylindrical section (measuring cylinder) coaxial with the datum axis a, the section line shall be contained between two circles 0.1 apart and perpendicular to the datum axis a.
在每一个与基准轴a同轴的圆柱面内(测量圆柱)，该截面线应包含和基准轴相距0.1两个圆圈之间。
The feasibility of taking strained-wire as navigating datum line of dummy guide-way was analyzed in laser length measurement system, and working principle of the system was presented.
对以张力金属丝作为激光测长系统虚拟导轨导航基准的可行性进行了分析，给出了系统的工作原理。
Feasibility of a kind of guiding datum line of linear motion in large distance using strained wire is analyzed. The working principle of the system is presented.
对以张力金属丝作为大长度直线运动导引基准的可行性进行了分析，给出了系统的工作原理。
On the paper, constrative experiment of fly ash cement mortar, fly ash line cement mortar and datum cement mortar has been done. The influence of mortar's performance fly ash made is analysised.
本文通过对掺入粉煤灰的高强水泥砂浆、高强石灰水泥砂浆与基准砂浆的对比试验，分析了粉煤灰对砂浆性能的影响。
A line of punch positions parallel to the Y datum line of a punch card.
基准线平行，在地平面或者基准平面上。
The datum of the recovery time are clarified to be in line with the requirements of the design criterion by choosing the proper parameters for the throttle gate and the annular gap.
当对节流孔以及环形缝隙两变量赋予合适的数值时，得到的空载恢复时间数据符合设计规范的要求。
If the element being tested with tolerance requirements is an axis, centre line or symmetrical plane, the arrow and datum symbol should be aligned to the dimension line of that element.
当被测要素为轴线、中心线或对称平面时，指引线的箭头和基准符号应与该要素的尺寸线对齐。
Automatic adjustment of datum line, Automatic gain control, digital filter and data compression are adopted in it, and it can make long-term dynamic record.
该装置采用了自动基线调整，自动增益设置，数字滤波，数据压缩等技术，可进行长时间动态记录。
The datum line and mainly three profile height parameters of surface roughness are briefly introduced and the operation principle and system structure of AFM.
简要介绍了评定表面粗糙度参数的基准线及其主要的两个轮廓高度评定参数，详细阐述了重庆大学研制成功的一种高精度原子力显微镜——AFM。
An united space datum line has been given.
给出统一的空间基准线。
For the software system, we adopt assemble language to deal with datum and control program, so as to realize the on-line and real time control.
软件部分利用汇编语言对算法以及一些控制程序进行编程，实现在线实时控制。
The vertical datum line set up by this system can be used to monitor deformation of the various building.
用这种垂准系统建立的高度较大的垂准基线，可以用于超高层建筑物施工和变形监测。
Results Femoral shaft edges were obtained from both frontal and lateral X ray images successfully, and then datum line was se…
结果获得符合要求的骨骼边缘，完成股骨骨干段基准线的三维空间显示。
Both nature upper eyelid goffer and upper vessel net of margo palpebrae were used as a datum line. According to the base line, double eyelid plasty was performed.
方法根据上睑缘血管网上缘及自然上睑体表皱褶为标准设计650例重睑手术。
Both nature upper eyelid goffer and upper vessel net of margo palpebrae were used as a datum line. According to the base line, double eyelid plasty was performed.
方法根据上睑缘血管网上缘及自然上睑体表皱褶为标准设计650例重睑手术。
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