On the basis of the calculating method, using the way of combining subsection sweeping, Some spectrum analyzer s measuring parameters are optimized and the measuring of the logarithm frequent scale broad-band phase noise spectrum.

Then combined with the practical installing process,it illustrates the sweeping work on the system after the basic installation.

According to characteristics of the arborous flowline network, the General Construction Engineering Company of Changqing Petroleum Exploration Bureau summarizes a set of purging and pressure test methods for arborous flowline network.

An introduction to the fuel feeding,and purging system of a 9FA double-shaft dual-fuel gas-steam combined cycle power unit,the most advanced one in China,made by GE US,is being presented,with focus on their structure and operation mode.

In accordance with the layout features of a boiler unit at Lazidan Power Plant in Armenia, boiler steam-plus-oxygen technology instead of the traditional chemical washing plus ignition purging technique was introduced for the purging and passivation of the steam-water system of the boiler unit.

A new technology for residual milk re cycling by the application of aseptic air blowing was introduced.