例句與造句

1. DC calculating boards used resistors and DC sources to represent an AC network.
2. Aids to electrical calculation started with DC network calculating boards and AC network analyzers, which reached a high degree of development by the middle of the 20th century.
3. An example of nominal lumber includes air space around the physical board when calculating board feet in some situations, while the true measurement of " board feet " should be limited to the actual dimensions of the board.
4. It's difficult to find calculating board in a sentence. 用calculating board造句挺難的