in echelon
短語詞組
- official in lower echelon 下級(jí)官員
- officials in lower echelon 下級(jí)官員
- fly in echelon 梯隊(duì)飛行
- squadron in echelon 梯次配置的中隊(duì)
- flying in echelon 成梯隊(duì)飛行
- fly in echelon formation 梯次編隊(duì)飛行
- overall enrichment in echelon 梯次綜郃富集
- aircraft flying in echelon 成梯隊(duì)飛行的飛機(jī) 返回 in echelon