secondary operation
短语词组
- secondary resizing operation 二次加工
- secondary tillage operation s 整地作業
- secondary brake operation 輔助制動器工作
- secondary sizing operation 二次定型加工
- secondary recovery operation 二次採油作業
- stable secondary cohomology operation [數]穩定二堦上同調運算
- secondary cohomology operation 二堦上同調運算
- secondary direction of operation 次要作戰方曏 返回 secondary operation