查询词典 precision block

The mechanical transmis-sion is composed of high precision gearwheel and gear bar together with germany made low clearance and peg-free planetary gearwheel reducer. the mechanism is equipped with automatic clearance compensation device, which enables a clearance-free transmission and ensurea teh good performance and precision of the cutting machine.

机械传动采用高精度齿轮齿条及德国原装低隙免键行星齿轮减速器，机械结构增设自动补偿齿隙装置，使之做到无隙传动，保证了切割机良好的使用性能和精确度。

In existing technology, the nonnal way is adopting the four-bar linkage mechanism to imitate the arc or the linear movement. On the theoretical analysis, its movement precision can meet the requirement, while in the operation, because of the abrasion of bearings in gemel, which do much greater effect on movement than the former, its movement precision goes much beyond the theoretical value.

现有技术中一般是采用四连杆机构来仿弧线或直线运动，从理论上讲其运动精度是能够满足要求的，但在实际使用中，由于铰链点轴承的磨损（另外，装配时也预留了一定的轴承间隙），对运动轨迹产生的影响很大，其运动精度就大大超出理论值。

Asynchronous loading of control parameters · Rapid (25ns per pixel) rotation, warping, panning, and scaling of images · Three-dimensional image addressing capability · General third-order polynomial transformations in two dimensions on-chip · Three-dimensional transformation of up to order 1.5 also supported · Flexible, user-congurable pixel datapath timing structure · Static convolutional ltering of up to 16 x 16 Pixel, 256 x 256 pixel or 256 x 256 x 256 pixel windows · User-selectable source image subpixel resolution of 2-8 to 2-16 · Pin-compatible upgrade to TMC2302 · 24-bit (optional 36-bit) positioning precision within the source image space, 48-bit internal precision · Low power CMOS process · Available in a 120-pin Plastic Pin Grid Array and 120-lead Metric Quad Flat Pack

1第1页，本页显示记录1-11，共11条记录分1页显示·异步控制参数加载·快速（25ns的每个像素）旋转，弯曲，平移，缩放和图像·三维图像处理能力·一般二维三阶多项式变换片·三高达1.5三维变换命令也支持·灵活，用户可配置的数据通道的静态时序结构·高达16 × 16像素滤波卷积像素，256 × 256像素或256 × 256 × 256像素（3通）窗口·用户可选的源图像亚像素分辨率的2-8 2-16·引脚兼容的升级TMC2302·24位（可选36位）的定位源图像的空间内，48位内部高精度·低功耗CMOS精密加工·提供120引脚塑料针栅阵列和120引脚公制四方扁平封装

For reducing boundary distortion area, the elevations of grid DEM are viewed as a discrete sequence under a generalized coordinate, so that the boundary problem of two-dimensional discrete wavelet transform is turned into the boundary problem of one-dimensional discrete wavelet transform, which not only greatly reduces the boundary distortion area, improves the precision of reconstructed DEM data near the boundary, but also decreases the number of zeros adding on the boundary for wavelet transform, and boosts the compression ratio. On the basis of analyzing the distribution characteristics of coefficients in low and high frequency bands, a mixed entropy coding plan is applied, and a high efficient quantizator called"self-adaptive hard threshold"is established, which is helpful for improving the precision of the reconstructed DEM data and for enhancing compression ratio.

为了减小小波变换山区格网DEM数据压缩中边界失真区域，将山区格网DEM高程值视为广义坐标下的离散随机序列，把二维离散小波变换中的边界问题转换为一维离散小波变换中的边界问题，不仅大大减少了小波变换边界失真区域，提高了重构DEM数据边界点的精度，而且减少了边界补零个数，提高了压缩比；通过对山区格网DEM数据小波变换低频区和高频区变换系数分布特点的分析，采取了霍夫曼—游程混合熵编码方案，设计了高效、低失真的"自适应硬阈值"量化器，即对低频区变换系数不进行量化，直接进行霍夫曼编码；对高频区变换系数则先用"自适应硬阈值"方法量化处理，再进行游程编码。

At present, optical precision instruments, including high-precision digital Autocollimator, goniometer, automatic optical focal length of the device, eccentric parallel devices and fluorescent tubes, etc., while providing for the optical, infrared and mechanical measurement of the field of customized products and programs, through international ISO9001 quality certification system.

目前光学精密仪器包括高精度数字式自准直仪、测角仪、全自动光学焦距仪、偏心仪及平行光管等，同时提供针对光学、红外及机械测量领域的定制产品和方案，通过国际ISO9001质量认证体系。

In chapter 4, the influence of the wave-front curvature of Raman pulses on the measurement precision of gravitational acceleration in atom interferometers is analyzed with the method of a transmission matrix. It is shown that the measurement precision of gravitational acceleration is highly dependent on the spot size of the Raman pulse, the temporal interval between Raman pulses and the optical path difference of the two counter-propagating Raman pulses.

第四章运用高斯光束传输矩阵的方法计算了原子干涉仪实验中拉曼光束波前弯曲对重力加速度测量精度的影响，得出了精度与拉曼光束光斑大小，拉曼脉冲作用的间隔时间，以及拉曼光束光程差之间的关系。

The system is a high speed powder Hame spraying system,equipped with high precision powder feeder and oxygen acetylene name heat source,with compr- essed air to improve the Hame heat utilization The system consists of three pads:high energy torch,high precision powder feeder and gas supply Unit.

该系统是以氧乙快火焰作热源、用压缩空气提高火焰热能利用率、配备高精度送粉器送粉的高速火焰粉末喷涂装置。由高能喷涂枪、高精度送粉器和供气装置三部分构成。

The precision identification has been made by open channel now measurement according to now measurement precision of non-throat flume in headwork of high main canal of the Dashuijiang irrigation project and the availability has also been evaluated based on quantitative and quantitative analysis.

大水港灌溉工程高干渠渠首无喉道量水槽的量水精度，采用明渠测流法进行精度鉴定，并在定量定性的基础上，评定量水槽的适用性。

Marble flat scale in use rock tool, even if suffers the heavy item clash, falls several grain of ballast marble flat scale it to surpass the high-test cast iron and the steel products manufacture precision measurement datum components at most, may obtain high and the stable precision.

大理石平尺在使用中岩石工具即使遭重物磕碰，至多掉几粒石碴而已大理石平尺其优于优质铸铁和钢材制作的精密测量基准零件，可以获得高而稳定的精度。

High measure precision: High precision and low operation error can meet needs of various levels of operator, identical measurement results can be gained in spite of different practical experiment of operator.

测量精度高：不但测量精度高，且个人操作误差小，不同的测量人员，不管有无经验均可获得相同的测量值。●使用范围广泛：可测大型、重型工件某个部位的尺寸，也可适用于高温、放射性等恶劣环境条件下的测量。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"