原子氢焊接  atomic hydrogen welding

原子氢焊接机  atomic hydrogen welding apparatus

氢原子焊  atomic welding

原子氢焊  atomic hydrogen welding

原子氢焊电极  atomic hydrogen welding electrode

原子氢焊机  atomic hydrogen welder

把管子焊接成双接口管段的场地  doubling yard

单面焊焊接接头  single-welded joint

对接焊接接头  butt weld joints

钢制对接焊接接头  steel butt weld joints

焊管焊接  welded pipe welding

加套管焊接接头  sleeve-weld joint

拼接焊接接头  butt joint

(+)被动型氢原子频  Passive hydrogen maser

团簇+连接原子结构模型  cluster-plus-glue-atom model

k介子原子  kaonic atom

N维氢原子  N -dimensional hydrogen atoms; N-dimensional hydrogen atoms

π介子原子  pi-mesonic atom; pionic atom

玻尔氢原子理论  Bohr hydrogen atom theory