例句與造句

1. In 1939, Alfv閚 proposed the theory of plasma dynamics in the earth's magnetosphere.
2. Working both in the laboratory and with theoretical calculations, he found many ways to put waves to work in fusion research, and his 1962 book, " The Theory of Plasma Waves, " codified the subject in mathematical form.
3. It's difficult to find theory of plasma in a sentence. 用theory of plasma造句挺難的