例句與造句

1. This has since been confirmed by russian sources ; the transmitter consists of two swept - frequency generators of sinusoidal voltage and two parallel horizontal grounded antennas , each about 60 km long
   這一點(diǎn)被來(lái)自俄方的消息所證實(shí)；發(fā)射機(jī)有兩個(gè)掃頻發(fā)生器，產(chǎn)生正弦波，同時(shí)有兩幅相互平行的水平地面天線，每個(gè)天線有60千米長(zhǎng)。
2. It's difficult to find sweep-frequency generator in a sentence. 用sweep-frequency generator造句挺難的