查询词典 precision

Because there is not feedback equipment between the engine to the worktable in lathe with open or half-open loop system,its machining precision is influenced by the manufactured precision of itself and human′s programming and operating greatly.

采用开环及半闭环系统的数控车床由于从驱动电机到机床工作台之间无反馈装置，其加工精度受机器本身制造精度及人为编程、操作影响较大。

The cost-benefit analysis methods for the GNSS non-precision approach and the traditional non-precision instrument approach are given as reference formiddle or small feeder-route aerodromes.

针对中小支线机场，给出GNSS仪表非精密进近与传统陆基导航设施下的仪表非精密进近的成本/效益分析方法。

With the help of recommended abrasives and techniques, through the process of heating – roughly hot rolling – precisely hot rolling in a variety a machines, hot rolls can be shaped into high-precision aluminium belts, which shall better meet the growing needs of the PS baseboards for pots and the simifinished aluminium foil sheets, for there is a big market gap and high grade request for high-precision aluminium belts in the market.

三、建设规模：年产40万吨高精度铝板带热轧卷；工艺技术：采用国际先进的热轧生产技术，由铸锭经加热—热粗轧—多机架热精轧的生产工艺，配合引进的工艺技术磨具可满足制罐料 PS 板基、双零铝箔坯料等市场缺口大的高精度铝板带产品对热轧卷的质量要求；主要设备：包括铸锭铣床一台、推进式加热炉3台、2400mm1+4热连轧生产线一条、轧辊磨床2台（国外引进1台），预计引进设备需用外汇8000万美元。

The introductive robot arm of this text can output two lines pulses by the PLC, driving the horizontal stalk, and the perpendicular stalk to drive the electrical engineering actuator respectively, to control the robot arm precision of the horizontal stalk and perpendicular stalk at the fixed position, tiny move switch input the position signal to the PLC.The direct current motor drags along to begin the claw and bedrocks to revolve, the position signal from revolve the code dish and near to the switch feedback to host of PLC;The electromagnetism valve control the machine hand open and close, thus carry out the function of the machine hand precision work.

本文介绍的机械手是由PLC输出两路脉冲，分别驱动横轴、竖轴步进电机驱动器，控制机械手横轴和竖轴的精确定位，微动开关将位置信号传给PLC主机；直流电机拖动手爪和底盘旋转，位置信号由旋转码盘和接近开关反馈给PLC主机；电磁阀控制气开阀的开关来控制机械手手爪的张合，从而实现机械手精确运动的功能。

As the six-dimensional high precision motion platforms as well as the compact and reasonable structural layout thereof are arranged, the invention can be effectively applied to the alignment and the encapsulation of various planar waveguides requiring high precision alignment, and can conveniently expand external equipment such as an IR-CCD, machine vision, a point gum machine, an UV curring unit and the like.

本发明设有六维高精度的运动平台和其紧凑、合理的结构布局，可有效应用于要求高精度对准的各种平面波导的对准和封装，并且可方便扩展IR-CCD、机器视觉、点胶装置、UV固化装置等外设设备，且操作简单，运动范围大，精度高。

The quantitation was performed with deuterated N-nitrosodiethanolamine as internal standard. The limit of quantitation for N-nitrosodiethanolamine was 50 μg/kg. The mean recoveries were 89.1%~98.2% at the spiked levels of 50~250 μg/kg, with the intra-day precision less than 9% and the inter-day precision less than 11%.

NDELA的方法定量限为50 μg/kg；在50-250 μg/kg的3个添加水平范围内的平均回收率为89.1%～98.2%，日内精密度均小于9%，日间精密度均小于11%。

Qualitative and quantitative analyses were carried out for the analyte under the multiple reaction monitoring mode after the chromatographic separation on a Waters Atlantis T3 column (150 mm×2.1 mm, 3 μm). The quantitation was performed with deuterated N-nitrosodiethanolamine as internal standard. The limit of quantitation for N-nitrosodiethanolamine was 50 μg/kg. The mean recoveries were 89.1%-98.2% at the spiked levels of 50-250 μg/kg, with the intra-day precision less than 9% and the inter-day precision less than 11%.

NDELA经waters Atlantis T3色谱柱(150mm×2.1mm， 3μm)分离后在多反应监测模式下进行串联质谱定性及定量分析，以d8-NDELA为内标定量NDELA的方法定量限为50μg/kg；在50~250μg/kg的3个添加水平范围内的平均回收率为89.1%~98.2%，日内精密度均小于9%，日间精密度均小于11%。

Base on the analysis of the grating linear displacement measurement theory,t he measure errors especially the subdivision error of the grating scale,this paper focuses on the theory of switch and merge of dual grating scales'signals,builds the design criteria of high speed high precision displacement measurement by using dual grating sales,designs the switch picking reference with high precision and fast switch and merge method,analyses the errors brought in by switch and merge of the duals grating scales.

针对光栅尺的电子细分信号具有细分误差的特性，本文提出了对莫尔条纹信号不细分的方法以提高双光栅尺信号切换合成值的精度。经过对双光栅计数切换基准、切换与合成特征和规律的探讨，本文设计了实现双光栅尺双重测量、计数值切换合成法的硬件电路，主要通过可编程芯片FPGA，设计了双光栅尺信号处理的各电路模块，如双光栅尺信号四倍频辨向模块、速度判断模块、切换模块、计数值合成处理模块。

Fir Fortunately Seiki leading products: 1, bulging packages (also known as the swelling sets, key-free bearings, bushings-free bond, the bond-free coupling, internal and external expansion sets) 2, coupling mainly patch-coupling, precision servo motor couplings, air compressor for flexible coupling, no backlash precision flexible coupling, the universal joint, the plum blossom - Shaft, etc.

杉幸精机主导产品：1、胀套(又称胀紧套，免键轴承，免键衬套，免键式联轴器，内外膨胀套)；2、联轴器(主要有膜片联轴器，精密伺服电机联轴器，空压机专用高弹性联轴器，无背隙精密弹性联轴器，万向联轴器，梅花型联轴器等)；3、扭力限制器(按照国际标准，可完全替代日本，台湾，欧美进口产品)。

This results can serve as a basis for precision fertilization and precision management in farm.

因此，探索新的分析方法和系统全面地研究适合目前我国开展精细农业实践的农田信息的处理方法是非常必要的。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。