1. The pre-stressed anchorage is the important part of a firm system of a pre-stressing anchor, and its capability influences the security of the pre-stress component directly. 预应力锚具是预应力锚固系统的重要组件，其性能直接关系到预应力构件的安全性。
2. The services encompass fertility regulation, gynaecological check-up, pre-marital and pre-pregnancy preparation, menopause service and youth counselling. 服务范围包括生育指导、妇科检查、婚前检查、怀孕前验身、更年期服务和青年辅导等。
3. The corrosion often happens to the tubes of air pre-heaters in hydrocracking plants and blocks air pre-heaters so much, that the circulative effect is not well. 加氢裂化装置空气预热器翅片管经常发生腐蚀，同时产生了大量的腐蚀产物堵塞空气预热器，造成预热器流通不好。
4. As pre-treatment unit, series connection DAF system was implemented to improve the effect of pre-treatment of effluent from tannery. 制革废水预处理工艺采用串联式气浮操作单元将有效地提高制革废水预处理效果。
5. In other words, the majority of patients in the antemarital examination, pre-operative, pre-pregnancy, or when blood was detected by accident. 也就是说，大部分患者是在婚检、手术前、孕前或者献血时意外被检测出来的。
