rational index是什么意思

用法例句

The organic index,used to evaluate pollution in the sediments,is 0.

运用有机指数评价底泥污染,为0。

Moreover,sediment quality and pollution degree were assessed by organic index and organic nitrogen method.

2004年8月至2005年5月分4个航次对唐岛湾网箱养殖区沉积物中各形态氮、有机碳和有机质含量进行了现场调查,并利用有机指数和有机氮方法对沉积环境质量进行了评价。

Moreover, the sediment quality and pollution degree were assessed by organic index and organic nitrogen methods.

2004-08—2005-05分4个航次对唐岛湾网箱养殖区沉积物中各形态氮、有机碳和有机质含量进行了现场调查,并利用有机指数和有机氮方法对沉积环境质量进行了评价。