desulphurization desulfurization  脱硫

electrolytic previous treatment  电解预处理

ground previous high altitude installation  地面组拼高空安装

history of previous cesarean section  前次剖宫产史

in previous years  往年

influence from previous layer  相邻层的影响

longitudinal previous movement  纵向预偏

Normal tillage in previous crop  前茬耕作

No-tillage in previous crop  前茬免耕

old and previous design codes  新旧设计规范

on year-on-year basis;over the same period of the previous year  同比

Osteonecrosis due to previous trauma  创伤后引起的骨坏死

over the same period of the previous year  同比

previous  预先的; 上述的; 以前的; 前; 前一个; 以往; 上; 过早的; 往; 以前; 过去

Previous adsorption  预吸附

previous annual forecast  前年度预测

previous approaches  现状

previous caesarean  前次剖宫产

previous cesarean section  前次剖宫产