double density disk是什么意思

用法例句

Application study of “dual seal” technology in the seal retrofitting of rotary air preheater;

双密封技术在回转式空气预热器密封改造中的应用研究

A new-type dual seal with reversible seal head and balanced type was designed.

针对液环泵机械密封的工况条件及故障原因,设计了一种新型可逆式平衡型双密封,并阐述了该密封结构的特点、设计要点及实际应用的良好效果。

has adopted “air preheater double seal” technology of ABB-API Co.

衡丰公司采用美国ABB-API公司"空预器双密封"技术,在2003年2月1号机组大修中投资252万元进行了空预器双密封节能技术改造,漏风率由13。

The working principle and traditional rotor module of air preheater are introduced herein, Main featuers of semi-module and double seal that are most advanced in world are emphasisly introduced, Combin with these features illuminated the leakage air reduction measures of air preheater.

介绍了回转式空气预热器的工作原理及传统的转子模式结构,着重介绍世界最先进的应用于大容量锅炉的半模式结构和双密封结构,结合半模式双密封结构特点阐述减少空气预热器漏风的有效措施。

Introducing the structural characteristics and operation conditions of double seal hydraulic flat gate valve for slurry transportation pipeline, describing simply the making, application and maintenance of valves.

介绍了适用于浆体输送管线的双密封液动平板闸阀的结构特点及性能 ,叙述了其制造、使用及维护方

Adaptive watermarking scheme of double keys based on DWT;

一种基于DWT的双密钥自适应水印算法