英语语法分析

INAA techniques of tracing REE applied to studies of soil erosion has been introduced in this paper.

介绍了应用REE示踪法研究土壤侵蚀的中子活化分析方法。

Combined with the results of INAA and glaze study, this change in elemental composition should be caused by the change in porcelain raw materials or body-making crafts.

结合中子活化分析及瓷釉研究的结果来看，这种改变应是因其制瓷原料或胎料配方发生变化引起的。

An INAA (Instrumental Neutron Activation Analysis) method was used to determine the abundance of rare-earth elements in 58 late Palaeozoic coals and related rocks in North China.

采用仪器中子活化分析法(INAA)测定了华北晚古生代石炭纪-二叠纪58个煤及煤层夹矸和顶底板样品的稀土元素含量。