acetylene welding
气焊乙炔焊乙炔焊接
热门单词
- accessory auditory nucleus
- acetylsulfalene
- acid and alkali resistant gloves
- acid clay
- ACN = artificial cloud nucleation
- acrylic rubber
- active learning
- acylase
- adaptive crisis
- adarsa
- address display
- adenosarcoma
- adiabatic curing
- adjustable hand reamer
- adjustable hook spanner
- adolescarin
- adsorption potential
- aerograph
- aerological diagram
- aerophotograhic plan
- aerophotographic sketch
