Discussion about the correction for centring of engineering control network

This paper analyzes and discusses the construction, working principle and characteristic of general four jaw chuck and centring four jaw chuck by bracing inside diameter for vertical lathe for rough turning of the frame once.

论述立式车床粗车一次机座用的通用四爪卡盘和撑内径定心四爪卡盘的结构、工作原理及特点。

Centring attachment for machine tools non-centering telemotor

定心附件，用于机床非定心式遥控电动机

Laser centring device for X-Radiography

X射线照相用激光中心指示器

The structure, principle and application of a simple centring device used for the sharpening of hob cutters are described.

介绍了用于刃磨齿轮滚刀的简易对中装置的结构、原理及使用方法。

A Simple Centring Device for the Sharpening of Gear Hob Cutters

简易刃磨齿轮滚刀的对中装置

A centring device is arranged at the bottom of the matrix transfer ring.

胎体传递环底部安装有对中装置。

The setting range can be extended by removing the centring sleeve.

拆卸定心套筒后会扩大调整范围。

Group Testing Problem on B-d Model

关于B-d模型的群试问题

Objective To study the related factors for B-D test positive results and make the appropriate strategies.

目的总结B-D试验阳性结果影响因素，制定相应的对策。

METHODS The B-D test and biological monitoring were used.

方法使用GETINGE全自动清洗消毒器+安必洁3M低泡多酶消洗液对污染物品进行清洗消毒，并通过B-D试验、生物监测。

Analysis of related factors for B-D test positive results

B-D试验阳性结果相关因素分析

Firstly, working process of pattern matching is introduced, and B-M algorithm is analysed, and main disadvantages are pointed out.

首先介绍了模式匹配技术的工作过程，接着分析了B-M匹配算法，进而指出了该技术存在的主要缺点；

The research on bainite-martensite ( B-M) spheroidal graphite cast iron

贝氏体马氏体（B M）球墨铸铁的研究

The Extension of B-M Integral Formula of Type I in C~ n

C~n空间中的第Ⅰ型B-M积分表示的拓广

Primary Analysis on 1.4% C Steel by Martensite Phase Transition Phenomenological B-M Theory

用马氏体相变B-M表象理论对西山关系的初步分析

541 galaxie formed an obvious sequence along a diagonal of the two color diagram ( B-V)_T~ o ( U-B)_T~ o. This can be explaned by the different mixture of stellar population, which made up the galaxies.

541个星系在（B-V）T~O-（U-B）T~O两色图上沿一条对角线形成一个明显的序列，这可以从组成星系的红兰星的混合效应得到解释。

In this paper, the research object was focused on the B-V oxidation of 1-indanone by using 30% hydrogen peroxide as oxidant and some liquid and solid acids as catalysts in solvent of 2, 2, 3, 3-tetrafluoro-1-propanol.

本论文着重研究以30%的H2O2为氧化剂、2,2,3,3-四氟1-丙醇作溶剂、三氟甲烷磺酸和其它固体酸作催化剂的反应条件下，1-茚酮为反应底物的B V氧化反应。

After deriving their effective temperatures and luminosities from their ( B-V), ( U-B) colors and parallaxes we find their positions in the HR diagram to be mostly confined to the main sequence.

在从样本星的色指数（B-V），（U-B）和视差得到它们的有效温度和光度之后，我们发现在赫罗图上它们大多数是位于主序带内的。

In comparison with inactive normal stars with the same effective temperature, in general, the active stars covered by spots are more blue in B-V colours and their equivalent widths of Li I 6708(?)

与非活动的正常恒星相比，表面被黑子覆盖的活动星有更蓝的B-V颜色，它们的LiIλ6708（？）

Using low concentration of hydrogen peroxide ( 30%) instead of peroxide organic acid as oxidant in B-V reaction is friendly to environment and with higher atom economy.

用低浓度的H2O2（30%）来代替传统的过酸作为B-V反应的氧化剂，对环境友好且原子利用率高。