secondary line
短語詞組
- Secondary compartment line 區(qū)劃副線
- Secondary Trunk Line 二干
- secondary geodesic line 二次測地線
- parking secondary brake line 停放緊急制動管路
- secondary sensitivity line 次靈敏線
- secondary spectral line 二級光譜線
- Secondary electron line scanning 二次電子線掃描
- secondary ground line 副基線
- secondary power line carrier 低壓電力線載波 返回 secondary line