Operation era经营时代operationn.操作；运转；经营；行动；手术；运算；生效；（复）运筹学Operation Detachment分离计划operation main point操作要点Operation on pharynx咽手术Operation on canthus眦手术operation admittance手术准入operation inpatients手术患者Operation on tonsils扁桃体手术operation overvoltage操作过电压operationcoordination运营协调operation rood choice手术方式选择

1. The key technological operation in the process of soft full grain calfskin upper leather was discussed in this paper.
   介绍了牛犊全粒面软鞋面革的特点和制作过程中的技术操作要点。
2. This article summarized the experimental technology and operation outline of the paper electrophoresis for amino acid based on abundant experiments.
   摘要在大量实验的基础上总结出氨基酸纸上电泳实验技术和操作要点。