可测量的

The principle of measurements of speed of sound in gaseous phase is discussed and a cylindrical variable-path acoustic interferometer is described.

介绍了干涉法测量气体声速的试验原理和变程干涉声速测量的实验系统，使用本套测量系统测得的气体声速的精度可达5×10-4。

The method is :there are two perpendicular axes whose distance are controlled ,one is the axis of work table, the other is fixed with a microscope for aiming.

该测量方法是：两个相互垂直且间距可调的数控回转轴，一轴与工件的回转中心重合，另一轴上固定可移动的瞄准显微镜，当显微镜瞄准被测孔时，两轴的转角由各自的圆光栅测出，两轴之间的角度位置确定曲面壳体零件上小孔的孔位置，同时采用CCD摄像头，利用图象处理技术实现小孔的尺寸测量。

To get the observer's Lat.and Long.just by pressing a button without the sea horizon to turn to,we should know clearly the relationship between the accuracy of zenith distance observed and the accuracy of a position fixed,the causes of the errors of zenith distance observed,what accuracy of zenith distance observed could be obtained and what accuracy standard should be used.

要在无水天线测天时一按按钮就可定出较精确的船位经纬度，必须弄清天体顶距测量精度对定位精度的影响，弄清顶距测量误差产生的原因，可达到的精度及选用适当的精度标准。

One of its purpose is to generate a collision-free inspection program and measurement uncertainties of inspected parameters in the program for assessment of inspectability after the part is designed but hasn't been manufactured.

其目的之一是为了在零件设计出来以后，未加工之前，能得到一个无碰撞的零件测量程序，以及与这个无碰撞的零件测量程序相对应的各个被测参数的测量不确定度，作可测量性评估之用。

In the research on assessment of inspectability, a uncertainty model and uncertainty propagation model of Virtual Coordinate Inspecting System is setup according to the feature that parts to be inspected in Virtual Coordinate Inspecting System are considered as ideal parts.

在可测量性评估方法的研究中，本文从虚拟坐标测量系统中的零件被当作理想零件这一特点出发，建立了虚拟坐标测量系统的不确定度模型及其不确定度传递模型。

Minimum Zone Evaluation of form error is needed for measurement uncertainty analysis and assessment of inspectability of Virtual Coordinate Inspecting System, it is also a basis of Minimum Zone Evaluation of form errors and attitude errors.

形状误差最小区域评定是虚拟坐标测量系统中测量不确定度分析和可测量性评估所必需的，也是一切形位误差最小区域评定的基础。

RESULTS AND CONCLUSION: The cervical three-dimension images were reconstructed clearly with the CT three-dimensional reconstruction techniques. The cervical pedicular width, the axial length,α and β angles were measured by the soft measure function.

结果与结论：应用CT三维重建技术可以获得清晰颈椎三维图像，使用软件测量功能可精确地获取预置螺钉的椎弓根管宽度、轴线长度、α及β角；在颈椎椎弓螺钉置入情况下，可测量置钉的水平角度安全范围。

Coal load in ball tube of pulverizing system is affected by many factors, this paper analyzes these factors and their relations.

由于神经网络技术的发展，神经网络在非线性控制方面显示出强大的优势，同时近年来出现的逆系统方法对于多变量非线性系统的控制指出了一条可算是光明的道路，鉴于以上两项技术的优越性，本文提出对BMPS进行神经网络逆系统控制的方法，首先通过机理分析的方法建立了BMPS的非线性动态数学模型，并依此模型设计了神经网络逆系统控制方案，由于此方案中需要用到球磨机磨筒内负荷的反馈，但是磨内负荷是一个不能直接测量的量，而且其测量方法是多年来人们一直在努力的方向却又一直不能较好地解决，本文提出对其进行神经网络测量的思想和方法，这一方法的仿真试验和现场实测结果均表明其研发造价低廉的优越性和测量较为准确的实用性。

This measurement instrument can measure frequency,period and pulse width.

提出一种基于CPLD和89S51的多功能信号测量仪，该测量仪可测量频率，周期和脉宽等参数。

In order to solve this problem, a new method for the measurement of the wavefronts of high-power laser diode arrays with large dynamic ranges is presented.

针对这个问题，提供了一种可对大功率激光二极管线阵进行大动态范围波前测量的新方法，可在－π/2～π/2范围内进行高精度的波前斜率测量(±1′)。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。