It summarizes the process design, equipment selection and operation condition of mid low low temperature shift section in an 8*10 4t/a ammonia plant.

This paper briefly describes a process design and a technological use in medium-low-low temperature shift process under 2.

Microsurgery for intra and extra middle skull base tumors: analysis of 16 cases;

Through investigating a large number of surface fractures in the eastern Sichuan Basin and combining the observation results of subsurface core fractures in the middle part of the Sichuan Basin, the relation between the surface fractures and the subsurface fractures is discussed and a set of projects to classify fractural types based on the structural origin is proposed out in this paper.

The abnormality degrees of their external and middle ear were observed, the relationship between the auricle growing level, the bony fossa of external acoustic meatus, the hearing degree before operation and the abnormalities of middle ear were reviewed respectively.

The well X1 located in Penglai-zhen structure of central Sichuan Basin has been producing water for more than forty years, experiencing the course of natural water flow, pumped water production and repeated natural water flow.

The Evolution of the "Mean" Conception Before The Qin Dynasty;