Research is made on the influence of sinter pile stuff on recovery of Sm metal during La thermal reduction of Sm_(2)O_(3).
进行了镧热还原氧化钐时，烧结堆料对金属钐收率影响的研究。
2
The concept of the underground thermal energy is discussed, and some experiments are conducted on pile heat exchanger, it is helpful to solving the key problem.