不可测量的

However,in practice, the excursion ,transmission refraction and optics aberrance of the laser beam will affect the measuring precision.

但在实际应用中，激光光束的漂移、传输折射以及光学畸变对测量系统的测量精度具有不可忽视的影响。

For the sake of the accurate diagraph some small signals of ability, measure the enlarger is indispensable.

为了能准确测量一些小信号，测量放大器是不可缺少的。

How inscrutable are his judgments and how unsearchable his ways!

他的决断是多么不可测量！他的道路是多么不可探察！

With the continuous development of science and technology,electronic test instruments awide range of applications in the field of measuring technology,digital voltage meterof rapid development,it has become ameasurement realize automation,improve the efficiency of an indispensable instrument,digital is the current measurement instrumentation,one of the main directions of development.

随着科学技术的不断发展，电子测试仪器广泛的应用在测量技术领域中，数字电压表的高速发展，使它已成为实现测量自动化、提高工作效率不可缺少的仪表，数字化是当前计量仪器仪表发展的主要方向之一。

Bbstract:With the continuous development of science and technology,electronic test instruments awide range of applications in the field of measuring technology,digital voltage meterof rapid development,it has become ameasurement realize automation,improve the efficiency of an indispensable instrument,digital is the current measurement instrumentation,one of the main directions of development.

随着科学技术的不断发展，电子测试仪器广泛的应用在测量技术领域中，数字电压表的高速发展，使它已成为实现测量自动化、提高工作效率不可缺少的仪表，数字化是当前计量仪器仪表发展的主要方向之一。

It is a common problem to survey some boundary points in difficult area during the implementation of cadastral surveying.

地籍测量中对某些可望而不可及的界址点的测量是经常遇到的问题。

Classically, trilateration is widely employed for testing network localizability; even in many cases it wrongly recognizes a localizable graph as non-localizable.

经典的三边测量技术广泛应用于测量网络的本地位置，甚至在很多场合错误的认为可以定位的地图为不可定位的。

Based on this idea, the author has chosen two typical loess sections of Luochuan, and Xifeng for this study, collected the successive loess columns; To probe the conditional experiments of BeO sample preparation and measurement, and improve the existing method; On the basis of the technology improvement, the author has finished 402 samples' BeO preparation and AMS measurement; Also at the same time, to separate quartz from samples at 1 cm interval for both Luochuan and Xifeng sections systematically, to carry out measurements of quartz grain-size, SUS, grey scale, carbonate content and bulk sample density; By using the grain size model, the author has set up the chronological framework for both Luochuan, and Xifeng sections and the time sequence of millennial scale abrupt climate events recorded in loess strata, and reconstructed the East Asian monsoon history over 130ka by using multi proxies; Finally, to discuss the possible mechanisms of palaeoclimatic changes tentatively.

详细地球科学的发展离不开高精度和高分辨率的研究。运用长寿命核素如〓Be作为环境过程的示踪，已成为不可替代的有效工具。本论文选择洛川、西峰两个典型的黄土剖面，连续采集柱状样；探索了BeO样品制备、测量的条件实验，改进了原有的方法，完成了402个BeO样品的制备和AMS测量；同时还系统地分离洛川、西峰剖面高分辨率（1cm）黄土、古土壤样品中的碎屑石英，测量了碎屑石英粒度，以及全样的磁化率、灰度、碳酸盐含量和容重等古气候代用指标；采用粒度年代模式建立了洛川剖面和西峰剖面的年代标尺，建立了黄土地层记录的千年尺度的气候突变事件的时间序列，多指标重建了最近130ka东亚季风变迁史；初步讨论了古气候变迁的可能机制。

The digital oscilloscope is a very important instrument in the test and measurement. With the development of digital technique, the function of the DSO is improved; it replaces the analog oscilloscope gradually.

示波器是电子测量中不可缺少的基本测量工具，随着数字技术的不断发展，数字示存储示波器的功能进一步加强了，逐渐取代了传统的模拟示波器。

According to different use and characteristic of traverse survey data,three-rank databases including under mine data database,engineering data database and account data database are constructed.

随着计算机在矿山测量领域应用的深入，测量计算机软件的功能已不仅满足于数据计算方面，测量资料的存储与管理已是软件开发者不可回避的问题。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。