acetylene welding
气焊乙炔焊乙炔焊接
热门单词
- accelerated weathering test
- access hook
- accompanying sound trap
- acid refractory brick
- acoustic metanometer
- actinomycetes
- activated molecule
- active charcoal
- active counter measures
- activity level method
- acute infection
- additive-type fire retardant
- adductor
- adenosine triphosphoric acid
- adhesion wear
- adjustable center auger bit
- adjuvant drug
- advisor
- aegirite
- aerial lighthouse
- aerobic decomposition
