It presents the performance of slurry seal as the preventive maintenance required by the pavement strength, stability and flatness, and provides some measures to improve the seal coat quality.
2
用三种不同直径的浆态鼓泡塔研究气速、塔径、固相浓度、静止床层高度和气体分布器等对气含率的影响。
The variation of gas holdup with gas velocity, column diameter, solid concentration, static bed height and gas distributor was studied in slurry bubble columns with three different diameters.
3
本文对速生树的碱性亚钠法制浆作了较为详细的系列研究,确定了用这种制浆法制造可漂白软浆的蒸煮条件。
This paper presents a series of detailed experiment of produced pa per pulp by alkali- salfite process from quick- growing tree, and confirms the steaming condition of produced bleached paper pulp.