The theory of kinematics of the error motion for machine tools was analyzed and the error synthesis model of a five axis machine center including three prismatic and two rotary type of joints was discussed by use of a homogeneous coordinate transformation method .

分析了机床运动副的 误差运动学原理，利用齐次坐标变换对一 台包含3个移动副和 2 个转动副的五轴加工中心建立了误差综合数学模型。

The method is based on the hypothesis testing of statistics . According to operating characteristic curve the number of measurements of a signal is determined by limitation of the probability of Type ⅰ error and Type ⅱ error .

该方法基于统计学中假设检验的原理，根据OC特征曲线，限制第1 类 错误 与 第 2类错误发生的概率，以确定信号测量的次数。

Then a novel type ⅱ hybrid error control mode is proposed the throughput performance is analysed the result shows this mode can have higher throughput than current available ARQ mode via limited memory capacity and complexity .

之后，又提出了一种新的 第 2 类混合 差错控制方式，分析了其吞吐量性能，结果证明，此方式能以有限大的存储容量和实现复杂度达到比现有方式更高的吞吐量。

This paper presents a new type of the fiber impeller sensor which can measure the gas velocity ranged from 2m / s to 15m / s with a error of less than 0.1m/s at high temperature .

本文介绍一种 新型光纤叶轮流速传感器，它可以测量高温、低流速气体，测量范围为 2～15m/s， 误差为 01m/s。

This element refers to the trace record type and includes entry ( 1 ) exit ( 2 ) data ( 3 ) error ( 4 ) and fatal error ( 5 ) .

该元素指向跟踪记录 类型，包括entry（1）、exit（ 2）、data（3）、 error（4）和fatalerror（5）。

The designed control circuit consists of two components : isolating and sampling circuit used for sampling output voltage and isolating primary and secondary of the converter ; type 2 error amplifier designing compensated circuit for error amplifier to stabilize feedback circuit system .

设计的控制电路由两部分组成：隔离、取样电路，用来采样输出电压并实现变换器初、次级电气隔离； 2 型 误差放大器，设计补偿电路使反馈电路系统稳定。

On the L2 stability and error estimates for finite element methods for some type of diffusion equations

一 类扩散问题有限元解法的 L 2稳定性及 误差估计