With the length of 6160m of the main and secondaryearth dam, Nihe is a large reservoir.
泥河水库是一座大型平原水库，主副坝长度总计6160。
2
The experimental results show that adding rare earth oxide into molybdenum can improve the secondary emission coefficient of the emitter.
实验结果表明，在钼中添加稀土氧化物可以提高发射体的次级发射性能。
3
The study showed that the maxim secondary emission coefficient of rare earth molybdenum cathode materials was 2.45, which meet the requirement (>2.0) of magnetron to the cathode materials.