A-framed derrick
人字起重机
热门单词
- abrasive cloth
- AC magnetic contactor
- academic aptitude
- acanthesthesia
- accident boat
- acid-proof refractory
- acid-proof varnish
- Acme cotton
- acorn kernel meal
- acquired deafness
- Acramin pigment colours
- acrocarpous
- acrylic coating for plastics
- action research
- acylation
- adding machine
- additional roller table
- adenoid
- adjustable varying-speed motor
- adrenocorticotropin
- adsorptiometer
