光径

Main camp product :The ball bearing guide screw (may completely according to chart processing, welcome to attempt inquired), the straight line optical axis is by the technology which accumulates in the axis outer diameter common difference, the straight dimension, circumference, in the surface roughness guarantees the very high accuracy.

主营产品：滚珠丝杠（可完全按图加工，欢迎来图询问）、直线光轴是以积累的技术在轴的外径公差，直线度，圆周度，表面粗糙度上保证很高的精密度。

In the end, the synthesis condition and influential factors of PU-titania (TiO2) process, such as manufacturing sol (including the amount of water, the amount of PU/Titanium butyrate, the concentration of the solution, the pH value, the kind of alcohol), aging process, theoretical analysis of the dipping process, dry and heat treatment of the gelation, were also discussed especially. FT-IR、SEM、TEM、DLS techniques were applied to analyze and study the reaction mechanism and watch the surface and section of the PU-TiO2 membrane. According to above, it was inferred that PU-TiO2 membrane (containing K600) was better composite.

本文采用原位合成法制备了聚氨酯-二氧化钛水分散复合体，并着重对影响制备稳定透明的复合体的因素（包括加水量、醇的加入量、pH值、聚氨酯/钛酸四丁酯投入量、醇种类）进行讨论，利用红外光谱技术分析聚氨酯-二氧化钛分散复合体的结构，动态光散射技术与扫描电镜分别表征复合分散体的粒径大小与分布及复合膜的表面形态，结果显示含K600的聚氨酯-二氧化钛体系复合情况良好。

The isospin effects on the momentum dissipation induced by the Coulomb interaction in the process of heavy-ion collissions

在改变透镜光阑口径而维持靶室离子流强度不变的测量模式中，证实了离子间库仑相互作用增大束径的效

Due to different place, different purpose, now there are many kind of grind brushes to be used to do different non-polish surface, the grain # for grain brush range from 36# to 500#, and the common used ones are 36#, 46#, 60#, 80#, the grain size of 46# is 425-355μm (internation standard ISO, china standard GB2477—83),80＃is 212-180μm.

因这类石材使用的场合、目的和加工工艺不同，故其抛光不同规格非光面型板材时，目前多采用研磨刷。粒度号从36＃到500＃，正常情况下使用36＃46＃，60＃，80＃四个粒度。46＃磨粒粒度粒径为425～355(国际标准ISO，中国标准GB2477—83)，80＃为212-180μm。

The results of the simulation analysis and experiments indicate that the loss of ultraviolet scattering transmission in atmosphere is high because of the particle scattering and absorbing in solar-blind zone; that is, the received power can descend 20 dB with the distance increasing 10 times. Therefore, the ultraviolet scattering is fit for short range communication. In short range, the pulse extension due to scattering is at microsecond order and its influence for low and moderate bit rate communication systems is weak. Since the light output power of a single ultraviolet LED is low, a multi-LED array can be used to increase the transmit power and extend the communication range.

仿真分析与实验结果显示：日盲区紫外光在大气中散射传输时由于大气粒子的强烈散射与吸收，传输损耗较大，距离每增加10倍，接收功率下降20dB，因此日盲区紫外光大气散射通信适用于近距离通信场合；近距离传输时散射造成的光脉冲多径展宽为微秒量级，对中低速通信系统影响较小；单个紫外LED发光功率较低，可通过多个LED阵列来提高发射功率，增大通信距离。

A long exposure shows star trails behind a red-and-green aurora in Canada's Northwest Territories.

一种长暴光技巧显示明星的轨迹背后的山径红色和绿色的极光，在加拿大的西北地区。

Patterns in Nature: Northern Lights A long exposure shows star trails behind a red-and-green aurora in Canada's Northwest Territories.

一种长暴光技巧显示明星的轨迹背后的山径红色和绿色的极光，在加拿大的西北地区。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。