要求高精度的

Measures such as area ratio (the area under the aperture opening divided by the surface area of the aperture wall) and aspect ratio (aperture width divided by stencil thickness) can be used to determine appropriate aperture sizes.

因此，严格控制孔的质量是钢网成功设计的关键。特别是小量沉积材料要求精度高时的高精度要求。

The high precision reflector panel is part of a paraboloid of revolution. Taking the forming technique of separated manufacture, the precision of the panel edge is important as it is a curve in space.

高精度反射器面板型面为旋转抛物面的一部分，采用分块成形拼接安装的方法制造，每块面板的边缘形状为空间曲线，对边缘精度要求很高。

The statistical distribution of the fractional part of the multiplication of arbitrary coefficients, where the first item is integer, and its correspond n independent random variables.

具体来讲，计算费用低要求有快速的随机变量抽样算法，精度高要求随机数发生器的品质要好，随机变量抽样的精度高，仿真输出估计量的方差要小。

With the development of modern science, all kinds of pedestal platforms must be more precise . However, in the gradienter checking, the capability of the current optics quadrant instruments can not adapt to some of the pedestal platforms entirely, especially to some pedestal platforms on the ships (such as: naval ships).

随着现代科技的发展，人们对于各种基座平台的水平度精度要求越来越高，而现有光学象限仪已不能完全满足基座平台水平度的检测，特别是一些舰船上的基座平台，对于水平度精度的要求很高。

The results showed that:(1) some governing points, which were measured by submeter precision GPS, were utilized to correct the 1 m precision remote sensing image and it could satisfy the desired precision of geometrical correction, therefore, this method could be used as geometrical correction in the region where was short of the big scale relief map;(2) the density of the original data was the main factor to affect precision of the volume, and the precision of the calculated volume of earthwork could be improved to more than 90% when using the test points and feature points; the sparser the data density were, more significant could be improved; On the base that elevation of test points were measured by the submeter precision GPS, the error of the volume, which was produced by vectoring relief map to obtain DEM, could be calculated, and the calculation precision of the earthwork could be improved markedly.

结果表明：利用平面精度达亚米级的GPS测量控制点坐标对1米分辨率的遥感卫星影像进行几何校正，能够满足其几何校正的精度要求，可以解决缺乏大比例尺地形图地区的高分辨率遥感卫星影像的几何校正问题；通过对模型数据的分析，数据密度是影响体积精度的主要因素，利用检测点高程和特征点可以提高土方量计算的精度，使土方量计算的精度达到90％以上，数据密度越稀疏，精度提高越显著；采用高程精度达厘米级的RTK(Real Time Kinematic实时动态差分)测量检测点的高程，对用地形图扫描矢量化形成的DEM模型进行检测求出误差体积，可以大大提高土方量的计算精度。

Rotary servo motor + ball screw up to 2 ~ 5μm, and the requirements of CNC-servo motors - even without coupling gap - thrust bearing - Cooling System - high-precision rolling guide - Nut Block - table closed-loop system as a whole transmission part to lighter, higher precision grating.

旋转伺服电机+滚珠丝杠最高达到2~5μm，且要求CNC-伺服电机-无隙连轴器-止推轴承-冷却系统-高精度滚动导轨-螺母座-工作台闭环整个系统的传动部分要轻量化，光栅精度要高。

It features compact in design,light in weight,high precision and small fitting clearance.

单排交叉滚柱式回转支承，由两个座圈组成，结构紧凑、重量轻、制造精度高，装配间隙小，对安装精度要求高，滚柱为1：1交叉排列，能同时承受轴向力，倾翻力矩和较大的径向力，被广泛地用于起重运输、工程机械和军工产品上。

According to the current high real time peculiarity and high precision demands of beacon beam processing subsystem of space optical communication and the requirements of our project, the method that uses digital signal processor to solve the image position error signal extraction of beacon beam is proposed in this dissertation. It have the following advantages: the small system volume, the slight weight, the small power, the high real time peculiarity and the high precision and so on.

根据目前空间光通信对信标光处理子系统提出的高实时性和高精度性的要求以及课题的需要，本论文提出用数字信号处理芯片DSP来解决空间光通信中信标光的像面位置误差信号提取的问题，其优点就是系统体积小、重量轻、功耗低、实时性高、精度高等。

Olivetti card" pneumatic feeders, Italy technology, with similar products unmatched precision, speed and a higher stability of positioning the needle can not meet your requirements of precision, more than 30, years, countless users the use of display,"olivetti card pneumatic nutrients may be similar products in the world's best products.

&好利牌&气动送料器，意大利技术，具有同类产品无可比拟的高精度，高速度和更高的稳定性，不用定位针就可达到您要求的精度，30多、年来，无数用户的使用显示，&好利牌&气动养料器可能是世界上同类产品中最好的产品。

Olivetti card" pneumatic feeders, Italy technologies, with similar products unmatched precision, speed and a higher stability of positioning the needle can not meet your requirements of precision, more than 30, years, countless users the use of display,"olivetti card pneumatic nutrients may be similar products in the world's best products.

&好利牌&气动送料器，意大利技术，具有同类产品无可比拟的高精度，高速度和更高的稳定性，不用定位针就可达到您要求的精度，30多、年来，无数用户的使用显示，&好利牌&气动养料器可能是世界上同类产品中最好的产品。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。