jet-propeller 中文意思是什麼
jet-propeller
解釋
噴氣式推進器,噴氣式螺旋槳。-
Jet planes have displaced propeller ones
噴氣式飛機取代了螺旋槳飛機。 -
Compared with jet planes and propeller - driven aircrafts, the radar echoes of helicopters have different characteristics
與噴氣式飛機和螺旋槳飛機相比,直升機的雷達回波具有不同的特點。 -
This paper studies the helicopter, the propeller - driven aircraft and the turbofan jet airplane echo modulating feature parameter model and analyses the echo signal feature. it gains the target echo ’ s the cyclical modulation feature by using the complex ar frequency range bispectrum slice. because traditional method in extraction airborne radar ’ s radiant signal feature time has certain insufficiency, this paper proposes the approximate entropy and the norm entropy as the passive feature parameter in the airplane
由於傳統方法等在提取機載雷達輻射源信號特徵的時候存在著一定的不足,本文提出把近似熵和范數熵作為飛機目標識別的無源特徵參數,給出了提取相應特徵熵的演算法,實現對機載雷達輻射源信號的識別,通過和機載雷達類型的匹配,實現對目標的識別。 -
Effects of impeller ' s matching to double - stage axial flow water - jet propeller performance
燃用生物柴油對柴油機噴射過程的影響 -
Shipbuilding - machinery - shafting, propeller and water jet propulsion system - vocabulary
造船.機械設備.軸系推進器和噴水式動力系統.詞匯
分享友人