1.A method to ascertain airtightness of regulable refrigeratory, airtightness material selection and a way to made air retaining wall were discussed in this paper.
2.Counterfort retaining walls are optimized in the paper, using the optimum program, costs of different counterfort retaining wall parameters were calculated and based on the contrast analysis.
10.It might well be, Conway thought, the most terrifying mountainscape in the world, and he imagined the immense stress of snow and glacier against which the rock functioned as a gigantic retaining wall.