英语语法分析

Theory of thulium no-brush DC motor will be research.

了解稀土永磁无刷直流电机的工作原理。

Thulium in spiked sample was determined with good result.

测定了人工合成样品中的铥，结果比较满意。

The elements which have been studied most are those from gadolinium to thulium.

研究得最多的是从钆到铥之间的元素。