仪器的

The principles and a description of the main parts of the new instruments are as follows :(1)By means of a fused quartz mirror system and mercury horizon(shown in fig.4),a telescope with a fixed glass grid,three photomultipliers with respective a.c.amplifiers and a time recorder,the astrolabe can determine the time of almu- cantar transit of a star ...

新仪器的特点如下：(1)借助熔石英角镜组和汞地平、一架望远镜和固定的玻璃记录栅、三个光电倍增管及其交流放大器和一架计时仪，此仪器能无人差地测定星过等高圈时刻。

Collimator is one of the key tools to assemble,correct,adjust and test optical instrument,and it is an important part of the measuring instrument.

平行光管是安装、调校、测试光学仪器的重要工具之一，也是光学量度仪器中的重要组成部分。

The obtained Green′s function is applied to numerical modeling of electromagnetic wave resistivity MWD instrument, and the influence of the drill collar, the borehole-correction method, the radial characteristics of investigation and the vertical resolution of the tool are analysed.

用上述Green函数对随钻电磁波电阻率测量仪器进行数值模拟，分析了钻铤的影响规律、井眼校正方法、仪器的径向探测特性和垂向分辨率。

ARM have numerous characteristics ,such as expansile system structure, low-power, low-cost and the support for real time multitask .Applying ARM to the design of medical instruments matches the trend that medical instruments are developing towards minimization and portability.

论文摘要： ARM具有体系结构可扩展、功耗低、成本低和支持实时多任务等特点，将ARM应用于医疗仪器的设计符合医疗仪器便携化、一体化的发展趋势。

The main function of the hardware of virtual instrument is obtaining fault signal, and the software is the key to the system.

本文在广泛阅读和深入研究虚拟仪器的基础上，自行设计开发了基于虚拟仪器的电力电缆故障智能测距系统。

The input bias current flows at the instrument input due to internal instrument circuitry and the internal bias voltage.

仪器内部电路和内部的偏移电压会在仪器的输入端引起输入偏置电流。

We developed two kinds of new products for low-power and high-resolution mine shallow seismograph, mine geology detector and mine tunnel predictor. By field experimental verification, they can solve effectively the detecting problem of small geological structure and coal seam thickness around underground coal mine tunnel. Their performance and function of reached or exceeded the level of domestic similar products, and their power consumption (≤4W) is lower than the advanced high-resolution shallow seismographs at home and abroad.

开发出两款低功耗高分辨率矿井浅层地震仪产品——矿井地质探测仪和矿井巷道超前探测仪，通过现场试验验证，其可有效地解决煤矿井下巷道四周浅层地质小构造勘探和煤层厚度探测问题，仪器性能和功能达到或超过国内同类产品水平，且仪器的功耗(≤4W)小于国内外先进的高分辨率浅层地震仪产品

The modular circuit can function as several kinds of current logging tools by executing the corresponding instructions.

仪器通过模块化的电路设计利用软件设置完成以前多种测井仪器的功能，实现一机多用。

Virtual oscillograph is one kind of virtual instrument, This text has recommended the whole course of the developing of the virtual instrument.

虚拟示波器是虚拟仪器的一种，本文介绍了开发虚拟仪器的全过程。

All these characteristics make the apparatuses appropriate to use in fine formation description.

仪器的这些特性使得仪器非常适用于对地层进行精细描述。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。