engine envelope 中文意思是什麼

engine envelope 解釋
發動機外廓
  • engine : n. 1. 機械，機器。2. 引擎，蒸汽機，發動機。3. 機車，車頭。4. 工具；〈古語〉方法，手段。vt. 給…安裝發動機。
  • envelope : n. 1. 信封；紙袋；包封，封皮。2. 殼層，外殼。3. 【數學】包（絡）線；包跡。4. 【航空】氣囊；【天文學】包層；【生物學】包膜，包被。
  1. Product introduction ： " beifang neoplan " luxury coach series is designed and manufactured after introducing the whole set of technologies, key equipments and fixtures of the neoplan company of germany. with 12meters long prestressed envelope body, with monocoque and space frame, rear - mounted water - cooled engine, air spring suspension, elevating coach body, separate suspension fore axle, 2f power - assisted steering system, 11m3 luggage compartment, external swinging automatic door, warm and cool air conditioner, large complete rubber - laminated windshield, abs system

    產品簡介： 「北方-尼奧普蘭」系列豪華客車是我廠引進德國尼奧普蘭公司全部技術關鍵設備，夾具設計製造的具有世界先進水平的系列豪華客車，具有12米長預應力蒙皮車身，無大樑全承載式車架，後置水冷發動機，空氣彈簧懸掛可升降式車身，獨立懸掛前橋， 2f助力轉向系統， 11立方米行李倉，外擺式自動車門，冷暖氣空調，大型全幅夾膠前風擋玻璃， abs系統。
  2. The design of aero - engine optimal controller suitable for all flight envelope with neural network approximator

    利用神經網路設計航空發動機全包線最優控制器
  3. Wavelet analysis is used to translate noise signal of the engine into time - frequency domain. selecting appropriate frequency band to pick up and making its envelope spectrum, then two feature frequency - 0. 5x speed frequency and 2x speed frequency that represent the abrasion condition can be found. in addition, a new diagnosis method of image processing technique is proposed

    利用小波分析將測得的機體噪聲信號變換到時頻域，選擇合適的頻帶加以提取並進行包絡譜分析提取包含特徵頻率的包絡，通過分析提取后的0 . 5倍頻和2倍頻分量，發現兩個特徵頻率可準確反映主軸承的磨損狀況。
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