测高

Yuhang Technology Co., Ltd character as professional manufacturer of kinds of automation products which include sensor, Transmitters, amplifiers and intelligent instrumentation and computer control system for pressure, dynamometry, weight ...

湖南宇航科技实业有限公司是专业研发生产各类压力、测力、称重等系列传感器、变送器、放大器及智能仪表和计算机测控系统，具有精度高、性能稳定等特点。

A summary of three commonly used kinds of tidegenerating potential development has been made. Different from the theoretical model of the effect of solid earth tide on station displacements recommended by the IERS1996 and IERS2000, a spectrum method is developed, independent of almanac, at the submillimeter level using precise development of TGP.

测站位移的潮汐效应是通过潮汐参数Love数hnm和Shida数lnm来表征的，而且测站的潮汐位移几乎是由二阶引潮力位引起，三阶潮汐效应很小，在毫米精度上更高阶的潮汐影响完全可以忽略[1]。

This paper describes a feasible calibration method, its basic principle for calibrating is: A certain function relationship is existed in equivalent inductance L of coil and the distance x between the object to be measured and the sensor coil, the measurements can be conducted with this function relationship by using frequency modulation. The calibrating system consists of measuring electric circuit, high stable voltage power supply, digital frequency meter, the conductor to be measured and the calibrated displacement sensor.

文中叙述了一种较为可行的标定方法，其标定的基本原理为：线圈的等效电感L和被测物体与传感器线圈的距离x存在一定的函数关系，利用这种函数关系用调频法进行测量，标定系统由测量电路、高稳定度稳压电源、数字频率计、被测导体及被校位移传感器组成。

Secondly, geodesic Gaussian basis functions are defined on the graph. A shortest path obtained by a shortest path faster algorithm is used to approximate a geodesic distance.

其次，在图上定义测地高斯基函数，并用基于最短路径快速算法得到的最短路径来逼近测地线距离。

Acoustic Doppler Current Profilers is a new kind of flow measuring device widely used in hydrometry. It uses the principle of Acoustic Doppler instruments to measure flow velocity profile. A short time flow measurement, high resolution, good accuracy, integrity data and great information are the characters of ADCP.

多普勒测流仪是当前在水文行业推广的一种新型测流仪器，该仪器利用声学多普勒原理，测量水流速度剖面，具有测验时间短、分辨率高、精度好、资料完整、信息量大等优点。

However, please be noted that high sensitivity will allow the interfusion with exterior noise irrelevant to the quantity to be measured, which will be also amplified by the system.

传感器的频率响应高，可测的信号频率范围就宽，而由于受到结构特性的影响，机械系统的惯性较大，因有频率低的传感器可测信号的频率较低。

In the teaching experiment of task-based teaching model in the senior English writing, experimental classes and contrasting classes have pre-test and post test in listening, written examination and compositions. It is obvious that the students of experimental classes have improved their English in listening, written examination, and compositions after the experiment. The students who are in experimental class have active thinking and they can emit their opinions with courage and participate the class teaching with highly enthusiasm. Also they have strong consciousness of cooperation.

长春市第十七中学任务型教学模式高中英语写作的实验，首先进行了实验前测，目的是为了比较理科实验7班和对照班8班在实验前的英语水平，实验前测分为听力、笔试和写作三个部分，得出的结果是实验前两个班级在这三方面的差异很小，进行实验后，又进行了听力、笔试和写作的测试，结果表明，高中英语写作任务型教学实验是有效的，而且从平时课堂观察来看，实验班学生思维活跃，勇于发表自己的见解，课堂参与的积极性高，合作意识较强，口语表达能力强。

Interestingly, at E13.5, strong Foxp2-expressing differentiated striatal neurons were detected in region adjacent to SVZ, rather than in lateral part of MZ as in the control littermate.

有趣地，在胚胎期第13.5天，高量表现Foxp2的已分化纹状体神经元在近SVZ区被侦测到，而不是像同胎对照小鼠在MZ区外侧被侦测到。

We found that the mean square error of difference value between GPS monitoring deformation and the second-order leveling surveying deformation is less than 1 mm, and there is a smaller systematic error between the ellipsoidal height deformation and the second-order leveling deformation ,whose value is about 0.5~1 mm; however, this system error does not affect the outcome of vertical deformation monitoring.

结果 得到的GPS监测变形量与水准测量变形量差值中误差＜1 mm，且GPS所测大地高变形量与二等水准测得的变形量间存在一个较小的系统偏差，其值在0.5~1 mm之间，该系统偏差不影响垂向变形监测的结果。

Based on laser interferometer theory,Multi-wave interferometer by phase-shift ing method is applied on high-reflective coated optical flatness measurement.

本文以光干涉原理为基础，分析多光束干涉原理特点及其在平面形貌测量中应用可能，提出应用移相方法对被测镀高反膜表面进行调制，得到一系列被调制的干涉图样，经计算机对干涉图样进行自动采集和图像解包裹，获得被测表面的三维形貌数据，并通过实际测试验证了该方法的可行性和科学性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。