envelope line 中文意思是什麼
envelope line
解釋
包絡線-
The ship radiated noise is analyzed and its 4 features are extracted from the envelop spectrum. the envelope of ship noise waveform can be demodulated utilizing hilbert transform, and the spectrum components with line rotation frequency of propeller shaft are extracted effectively by bispectrum, 1 ( 1 / 2 ) spectrum and 2 ( 1 / 2 ) spectrum analysis
對于通過希爾伯特變換解出的艦船輻射噪聲包絡信號進行高階統計量分析，有效地提取出了艦船噪聲的雙譜、 11 / 2維譜、 21 / 2維譜等方面的特徵。 -
Meanwhile it can filter the waveform and gather the envelope and calculation the current peak and max steepness of lightning by length of erased magnetic record. thirdly we need analyze the difference of length of erased magnetic record between kinds magnetic tape or pre - recorded sine wave on magnetic tape, and finding the min and max lightning current that can be recorded by magnetic tape. then we confirm the type of the magnetic tapes and the way of installing which fit to the line towers
同時對該波形進行濾波消噪，提取包絡線計算磁帶消磁長度和雷電流峰值及最大陡度第三部分根據mtlcd得出的數據分析不同雷電流通道下不同磁帶、不同預錄正弦波消磁長度的差異及磁帶可以記錄的最小雷電流和最大雷電流，找到可以在輸電鐵塔角鋼上安裝使用的磁帶及其放置方式。 -
Fluid power ; hydraulic filter elements for tank top return - line filters ; envelope dimensions
流體動力:罐頂回油過濾用液壓過濾器元件.包洛面尺寸 -
Please mark on envelope the title of the job applied for. on - line application can also be made through the civil service bureau s website (
Hk ） ，請在信封上註明所申請職位的名稱；亦可透過公務員事務局網際網路站（ -
Next, the soft method based on the dirichlet principle is given in detail. emphasis is put on the pattern of power addition along its main meridian line and the construction of the envelope of the nonrotationally symmetrical aspheric surface
其次，應用基於狄利克雷原則的軟設計方法，重點闡述子午線光焦度漸增曲線形式和漸變包絡面的構造方式。 -
The distribution of line - spectrum and its harmonics extracted from the spectral envelope of different target ' s radiated noise exhibits strong differences, which may provide important clue for the detection and classification of targets
摘要不同類型目標輻射噪聲包絡譜中的線譜及其諧波分佈存在較大差異，是進行目標檢測和分類識別的重要線索。
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