As indigenous oral bacteria, the Actinomyces are thought to contribute to caries especially to root caries.放线菌是口腔固有菌群中的主要菌属,与龋病尤其是根龋的发生、发展有密切关系.Firstly, a strain secreting blue pigments was separated from soil that was i...
不缴水费引起的断水的比率正在上升。The rate of disconnections following non-payment of water charges is rising.算出那些比率的平均值再乘以100。Take the average of those ratios and multiply by a hundred.英镑非常坚挺，对德国马克的比率是1比2.88。The pound was rock solid at ...