矿井中用钢制通风机来保持空气流通。The pit is ventilated by a steel fan.螺旋式通风机从壁孔中排出空气.Propeller fans exhaust air through holes in the wall.窗上的通风机发出了耳语般轻微的嗡嗡声.The fan at the window made a small whispering roar....
Alcoholism often leads to the alienation of family and friends.酗酒常常导致家庭和朋友间的疏远.Excessive drinking induces alcoholism.饮酒过度会引起酒精中毒.The doctor wrote a treatise on alcoholism.那位医生写了一篇关于酗酒问题的论文....
The walls on the outside were seamed with deep cracks which were a breeding - place for adders.墙外面深刻的裂缝是蝰蛇生息的场所.Or you can receive a pamphlet if you tell your adders.如果您留下地址的话,我们将寄一份本店的小册子给您.Full adders are discussed, an...
This applies to most respiratory infections ( e . g . mycoplasma infections, infectious coryza, laryngotracheitis ).大多数呼吸道感染都如此,如支原体感染, 传染性鼻炎, 喉气管炎....
Formaldehyde is used as one of basic raw materials in syntheses of synthetic tannins.摘要甲醛通常是用于合成鞣剂制备的一种基本原材料.The chemistry of cyclopentadiene organometallic complexes including the syntheses properties and applications a...