查询词典 precision block

Precision coating is a very important process in manufacturing of thin films. Among many coating techniques, slot coating may be the most promising in developing high precision coating process due to its versatility and controllability. Fundamentals of slot coating have been studied by many pioneer researchers. However, two topics: use of polymer additives and discrete operation remained relatively largely uninvestigated, especially in terms of their basic mechanisms. These two topics are studied in this thesis using theoretical analysis and experimental methods.

精密涂布技术是未来薄膜技术的重要发展方向，在诸多的涂布技术中，狭缝式涂布是用途广泛且有深厚发展潜力的一项，前人的研究阐明了许多狭缝式涂布的疑难问题，然而，随著精密涂布技术的发展，高分子添加剂与非连续操作逐渐地应用於狭缝式涂布之中，这两个研究课题目前并未发展出适当的理论来说明其机制，本研究以理论与实验的方法对这两个课题进行研究。

CPU of airborne computer implements existing data acquisition of unpiloted vehicle with low efficiency. To improve the efficiency and to solve problems on reliability, real time and precision, the design of acquisition system based on DSP which can make a circuit acquisition for 54 channels data is put forward. After acquisition, the data can transfer between the system and CPU of airborne computer through dual-port RAM. The software and hardware methods to revise ADC on DSP are described. Evidences show that the system can meet with the flight control system on reliability, real time and precision.

现有无人飞行器数据采集均由机载计算机主处理器完成，效率较低，为了提高效率，解决数据采集的可靠性、实时性及精度等问题，设计了一种基于DSP处理器的数据采集系统，该数据采集系统能够对54路模拟量进行巡回采集，给出了系统的软硬件实现方法，在数据采集结束后，系统通过双端口RAM与机载计算机主处理器进行数据传递；为了提高DSP片内ADC的采集精度，给出了片内ADC的软硬件校正方法；实验证明，该系统具有较高的可靠性，能够满足飞行控制系统对传感器数据采集的实时性及精度要求。

This paper introduces the research and implementation of all-purpose high-speed test adapter for ADC. The main contents includes two methods about how to testing the static parameters and dynamic parameters for ADC. The servo loop method is proposed to static parameters, by using the test principle of high-precision voltage source, high-precision voltage meter and digital comparator. To dynamic parameters, the DDS chip of AD9851 is used to generate sine waves with high signal to noise ratio, then the high-s...

servo loop ； FFT ；本文介绍了关于ADC高速通用测试适配器的研究和实现，主要介绍了测试ADC芯片静态参数和动态参数两种方法，针对静态参数，提出了用伺服环的方法，采用高精度电压源，高精度电压表和数字比较器的测试原理；针对动态参数，提出了用DDS芯片AD9851产生高信噪比的正弦波，采用高速采样模块采集数据，最后用FFT算法对采集的数据进行处理。

Shot Precision: with a high precision you can have a well-placed shot.

击球精度：具有精度高，你可以有一个良好的击杀点

Xinxiang Bashan Precision Filter Co. Ltd has 40 years of reed producing experience. It is the largest enterprise to produce the wire gauze loom reeds and the top enterprise to produce the batch of high precision reeds with professional technology at home.

新乡巴山精密滤材有限公司钢筘分厂具有40多年生产钢筘的经验，是国内最大的金属丝网用钢筘企业和批量生产高精度钢筘的专业化技术领先企业。

The paper will show that, if appropriate time information are added into the signals over the Loran-C data channel (studied in the first part of the paper) or in which the current multi-chains signals can be skillfully dealt with(studied in the second part of the paper), the independence of Loran-C for precision timing can be perfected, as well as the precision of timing signals and the automatization level of UTC synchronization can be improved, thereby the Loran-C can be acceptant and employed widely.

本文通过研究认为，在罗兰C信道上增加合适的时间信息或利用多链罗兰C信息，能够完善罗兰C高精度授时的自主性，提高定时信号的精确度和用户定时的自动化水平，从而提升该系统的可利用度和可接受程度。作者所做工作及主要成果如下

Bar code reading to your computer, this requires quality prints is very high, the quality of printed matter is, the for cards and membership card equipment, the higher the precision and also, by the same token, the device, the higher the price, the purchase of counterfeits by inability to high-precision equipment, which is on the anti-false aciform, the higher prices.

条码是由计算机来识读的，这就要求印品的质量很高，印品的质量越高，则所需的制卡和会员卡制作设备和精度也就越高，同样地，设备的价格也就越高，制假者无力购买高精度的设备，这就对商品有了防伪作用，设备价格越高。

Aerostatic bearings have been widely applied in high-speed and high-precision systems, but the need of high precision machining and low loading capacity retard their development.

中文摘要气静压轴承被广泛应用於高速与高精度系统中，但是高精度加工之需求及低承载能力也阻碍了它的发展。

It shows by theory and simulation that the location precision of the improved and conventional Gauss-Newton algorithm is equivalent but the location precision of the rear two algorithms is baddish under the same condition, i.e., the same measurement error and the same base-stations for location.

理论分析与仿真结果表明，在相同的观测误差和定位基站情况下，改进的和常规的Gauss-Newton迭代算法的定位精度相当，而相交圆弦线方法和最小二乘估计方法定位精度较低。

In the passive positioning of three geostationary satellites plus barometrical altimeter,the barometrical altimeter s horizontal dilution of precision and the pseudo-range s position dilution of precision are both defined,the formulas and distribution figures of such HDOP and PDOP are also given.

在三颗地球同步卫星加气压高度表的无源定位中，定义了气压高度表水平几何误差因子和伪距位置几何误差因子，并给出了相应的数学表达式和分布图。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切