轿车车身涂装漆面的划痕和损伤及其处理

<正>一、车身漆面划痕和损伤产生的原因及类型汽车在各种不同的环境中行驶,车身漆面经过长时间的风化、酸雨侵蚀、太阳强光照射及风沙等使漆面逐渐粗糙失光。另外,行车当中不慎与其他物体或车辆刮擦,以及车辆被人     

百利宝新型1 000米强光探照灯

功能特点： 出海、远行时，如果在夜晚遇到突发情况，便携式灯具必不可少。 百利宝新型1 000米强光探照灯有三个挡位，一为较弱光、二是强光、三为警示闪烁光。其特点如下：     

汽车转向器零件的激光表面强化

研究了汽车转向器零件在激光淬火工艺和硬化组织特征，对激光淬火件进行了疲劳寿命、耐磨性，传动效率等综合性能试验，结果表明，对ＱＴ４００－１０材质的转向器零件，用激光表面强化方法代替ＤＸ轴承套在技术上和经济上是可行的。     

A study of single-walled carbon nanotubes modified by organics of the phthalocyanine category

Organics of the phthalocyanine category have very good nonlinear optical properties. The single-walled carbon nanotubes were modified by using the phenoxy phthalocyanine. Characterization analysis was made by means of the transmission electron microscope (TEM), ultraviolet visible absorptive spectra, fluorescent spectra and Raman spectra. Under the TEM, it was observed that the composite looked like sugarcoated haws. By comparing the ultraviolet visible absorptive spectra before and after absorption, it was disclosed that the spectral intensity and the intensity of the peaks in the fluorescent spectra dropped remarkably. This shows that the single-walled carbon nanotubes have absorbed a large number of phenoxy phthalocyanines. Raman analysis revealed that in the Raman spectra, the position of the main peaks of the single-walled carbon nanotubes after absorption moved in the direction of long waves. The analysis suggests that the movement of the Raman spectra results from the change in the state of the single-walled carbon nanotubes before and after absorption.     

高强度背景光对航行安全的影响及对策

存在高强度背景光将严重影响航海人员的瞭望,从而对航行安全构成威胁,本文就此作一探讨,并提出对策,希望能引起航海人员的警觉。案例:1992年6月某日晚,Y轮满载货物从马来西亚返航广州港,此时的南中国海风平浪静,视线良好,     

节能型强光整流器的妙用

大家都知道,摩托车上用的蓄电池在使用一段时间后,必须取下进行充电,特别是一些长期低速、短途行驶、电启动频繁的车,应在使用半年到一年后对蓄电池进行一次完全充电,否则会缩短蓄电池的使用寿命,因此充电器几乎成了摩友们的必备品。而市场上的充电器良莠不齐,好的充电器通常价格很高且体积较大使用不便;差的通常就是一只变压器连着几只二极管,要么充不饱,要么容易过充电,用这样的充电器给蓄电池充电无异雪上加霜。