您要查找的是不是：
- Virtual Radar Defense 有效雷達防御
- Degradation of Radar Defense Systems 雷達防御系統衰變
- Degradation Radar Defense System 遞降雷達防御系統
- They picked up the yacht on their radar screen. 他們在雷達屏上看到了那艘游艇。
- The forest will act as a defense against desert dust. 森林能起防御沙漠灰沙的作用。
- Many heroic men and women have died in defense of liberty. 許多英勇的男男女女為捍衛自由而犧牲。
- The radar scanned the sky for enemy planes. 雷達密切監視天空，搜索敵機。
- The watchtower followed the aircraft by radar. 瞭望塔通過(guò)雷達追蹤這架飛機的行蹤。
- They had a dogged defense of the city. 他們對城市進(jìn)行了頑強的防守。
- These children were in a state of virtual neglect. 這些孩子實(shí)際上處于無(wú)人照管的狀態(tài)。
- Enemy ships were detected on the radar screen. 敵艦的影像已顯現在雷達(屏幕)上。
- They are repairing the defense works. 他們正在修防御工程。
- The signal was picked up by a downrange radar station. 該信號被試驗飛行方向之內的雷達站收到了。
- The accused has the right to defense. 被告人有權獲得辯護。
- A gunboat was detected by the radar. 雷達探測出一炮艇。
- Enemy aircraft were detected by our radar. 敵機被我方雷達發(fā)現。
- A virtual state of war exist between the two countries. 這兩國間實(shí)際上處於戰爭狀態(tài)。
- The ship was provided with radar equipment. 那船裝有雷達設備。
- ARPANET started by the US Dept. of Defense for research. 美國國防部建立了阿帕網(wǎng)，作研究用。
- There are enemy aircraft on the radar screen. 雷達螢屏上出現了敵人的飛機。
