缓慢、平稳地加油。Add the oil in a slow, steady stream.他拉起机头,平稳地降落下来.He brought the aircraft's nose up and made a perfect landing.这辆汽车平稳地以每小时100公里的速度行驶.The car was cruising along at 100 kilometres an hour....
When two or more elements combine and form a compound, a chemical change takes place.当两种或两种以上的元素结合形成化合物时, 发生化学变化。Dinucleotide A compound of two nucleotides linked by their phosphate groups.二核苷酸:由磷酸基团连接的两个核苷酸组成的化合物.Magnes...