Taking Huaze aluminum electric air-cooled unit as the example, this paper probes into the initial flushing process of 300 MW direct air-cooled units, and introduces in detail its flushing methods and flushing principles.

In order to ensure the stable and better working environment and reduce the treatment effect on the following treatment process,the working cycle,the flushing index,the flushing method and the control parameters of the biological contact oxidation process are discussed in this paper according to characteristics of the biological film.

The improved flushing method was used, and Pinus tabulaeformis,Platycladus orientalis and other 6 tree species were selected to measure the water potential and hydraulic architecture parameters of twigs, in order to study the water conditions and seasonal changes of the hydraulic architecture of these 8 greenery tree species.

orientalis seedlings (4 years old) using improved flushing method with normal water supply.

The hydraulic architecture parameters of Pinus tabulaeformis and Platycladus orientalis (4 years old) seedlings were measured by improved flushing method under the condition of controlling drought gradient in the green house.

Objective: To observe the effect of the Therapy irrigation and Davis skin graft on residual wounds of massive burned patients, which had been long-drawm-out course.