alluvium的复数形式怎么拼写？

alluvium的音标：alluvium的英式发音音标为：[ə'lu:viəm]alluvium的美式发音音标为：[ə'luvɪrm]...

n.冲积层，淤积层...

Many mining engineering subjects are established on geologic condition of alluvium.众多矿业工程均建设于冲击地层的地质环境之中.Examples of application of the method include the results of a regional water and alluvium study.作为方法应用的实例,列举了区域河水和...