boride cathode造句

例句与造句

1. Cerium boride cathodes have one and half the lifetime of lanthanum boride, due to its higher resistance to carbon contamination.
2. Boride cathodes are about ten times as " bright " than the tungsten ones and have 10 15 times longer lifetime.
3. Cerium boride cathodes show lower evaporation rate at 1700 K than lanthanum boride, but it becomes equal at 1850 K and higher above that.
4. It's difficult to find boride cathode in a sentence. 用boride cathode造句挺难的