abandoned coal pillar
残留煤柱
热门单词
- abattoir
- abnormal pulsation of carotid artery
- abortive forceps
- absorption pump
- academic intelligence
- acceleration transducer
- accessory drive casing
- accessory pulsatory organs
- accompanying element
- accounting on cash basis
- accurate to dimension
- acetylene bond
- aciclovir
- acid-resistant stoneware tower
- acidizing
- acne exulcerans
- acoustic feedback suppression
- acoustic(al) mirror
- acoustooptic modulator
- acrogens
- acrylic colour
