annular fir-tree blade root

航海及海运专业英语词汇(A4) ... annular element 环形构件 annular fir-tree blade root 周向枞树形叶根 annular float 环状浮标 ...

机械... ... annular entry burner 周环进气喷燃器 annular fir-tree blade root 周向装入的枞树形叶根 annular flow 环状流[动] ...