请专业高手来翻译一下

1.当时为了保证平面度,在折弯之前增加了一道校平工序.而在工艺图上没有体现出来：Had increased by a levelling working procedure at that time for guarantee flat surface degree, before breaking turn up. But do not precipitate on the flow sheet.
2.严格按照工艺图纸执行,如果有设计变更,一定要有工程部的变更单:Carry out strictly according to the art work sheet , must alteration Shan having project headquarter if having design alteration.

1. At that time, in order to ensure flatness, an increase of bending before a school-work and in the process has not reflected on the map
2. Strictly in accordance with the implementation of the drawings, if design changes, there must be changes to single-Engineering