The principle of partial nitrification and the merits of a new process based on that principle were analyzed, effects of the controlling conditions such as temperature, pH, dissolved oxygen, free ammonia and sludge age were discussed, and some new processes for partial nitrification were presented.

),it deals with the effect on controlling conditions for the location of air cushion surge chamber,the relation of the chamber with water passage,layout of service tunnel,compressor room,shape of air chamber and design of water curtain s.

Through analyzing of the controlling condition of indoor thermal environment quoted from the Criterion of Civil Buildings Thermal Design it indicates that the improving thermal performance of enclosed structures is the reasonable approach for buildings energy saving; and some good energy-saving methods have been put forward as well.

Introduction is made on the main points of the conditional control in the process of Heparin's preparation technology.

This paper introduces the conditional control of pump feeding lube into bearing when the submarine dives over-deeply or the propeller’s speed is too small, the high pressure pump must be turned on automatically.

firstly,from the design standpoint,the clear design route of sunken anti-slide pile was put forward,three controlling conditions of sunken anti-slide pile s cantilever were summarized at the same time;secondly,after theoretical analysis on three controlling conditions,the in depth-modified formula of foundation capacity and the controlling condition formula of sunken anti-slide.