Ferrite nano particles doped with cobalt , nickel and rare earth elements are prepared by hydrothermal , solvent - thermal and sol - gel method 并对? feooh掺30 %钴，制备出了较理想的针形的铁氧体粒子。
The size of the particles prepared by sol - gel method is little bigger than critical dimension and accordingly these samples have relatively high coercivity Feooh的纳米粒子的基础上，用微波法制备了? feooh ，得到了轴比较好的针形
In this paper , it is reported the synthesis of a new type of nanostructured film that is composed of needle - shaped tio2 particles through an acetic acid modified sol - gel method 使用醋酸修饰的溶胶凝胶法制备了一种由针形颗粒构成的二氧化钛纳米薄膜。
Semiconductor devices - part 12 - 5 : optoelectronic devices - blank detail specification of pin - photodiodes with without pigtail , for fibre optic systems or subsystems 半导体器件.第12 - 5部分:光电子器件.光纤系统或子系统用有无引线的针形光电管空白详细规范
Install a needle valve in the control line . if uneven pressure should cause the regulator to pulsate , its action can be stabilized by throttling the valve 在控制管线上安装一个针形阀。如果不稳定的压力导致调节阀波动，则这种波动通过对阀门节流将稳定下来。
Install a needle valve in the control line . if uneven pressure should cause the regulator to pulsate , its action can be stabilized by throttling the valve 在控制管线上安装一个针形阀。如果压力不均匀，则将导致调节阀波动。可以通过对阀门进行节流来稳定这种波动。
Insulators for overhead lines with a nominal voltage above 1 kv - ceramic or glass insulator units for a . c . systems - characteristics of insulator units of the cap and pin type 标称电压1000v以上架空线绝缘子.交流系统用陶瓷或玻璃绝缘子.盘形和针形悬式绝缘子组特性
Insulators for overhead lines with a nominal voltage above 1000 v - ceramic or glass insulator units for a . c . systems - characteristics of insulator units of the cap and pin type 标称电压1000v以上架空线用绝缘子.交流设备用陶瓷或玻璃绝缘子.盘形和针形悬式绝缘子串元件的特性
Insulators for overhead lines with a nominal voltage above 1 kv . ceramic or glass insulator units for a . c . systems . characteristics of insulator units of the cap and pin type 公称电压大于1 kv的架空线路用绝缘子.交流系统用陶瓷或玻璃绝缘子元件.帽形和针形绝缘子元件的特性
