pulse spectrum中文是什么意思

發(fā)音:

中文翻譯
造句

脈沖波譜
脈沖頻譜
脈沖譜

pulse n. 〔sing., pl. 〕豆類；豆。
spectrum n. (pl. -tra ) 1.【物理學】譜，光譜；波 ...
dark pulse spectrum 暗脈沖譜
microwave pulse spectrum analyzer 微波脈沖頻譜分析儀
pulse amplitude spectrum 脈沖振幅譜
pulse doppler spectrum 脈沖多普勒頻譜
pulse freqnency spectrum 脈沖頻譜
pulse frequency spectrum 脈沖頻譜
pulse spectrum bandwidth 脈沖頻譜帶寬
pulse spectrum envelope 脈沖頻譜包絡
pulse train spectrum 脈沖序列頻譜
pulse-amplitude spectrum 脈沖幅譜; 脈幅譜
pulse-cross-spectrum 脈動交叉光譜
pulse-frequency spectrum 脈沖頻譜
pulse-height spectrum 脈沖高度譜
pulse-spectrum analyzer 脈沖頻譜分析器
pulse-train frequency spectrum 脈沖列頻率譜; 脈沖序列頻譜
pulse-train spectrum 脈沖列波譜; 脈沖序列頻譜
reflection pulse spectrum 反射脈沖譜
rf pulse spectrum 射頻脈沖頻譜
a spectrum of 連續(xù)的，連串的
spectrum n. (pl. -tra ) 1.【物理學】譜，光譜；波譜；能譜，質譜。 2.【無線電】射頻頻譜；無線電(信號)頻譜。 3.【心理學】(眼睛的)余像；殘像。 4.〔轉義〕范圍，幅度；(連續(xù)的)系列。 an absorption spectrum 吸收(光)譜。 a bright line spectrum 線狀光譜。 an optical spectrum 光譜。 a solar spectrum 太陽光譜。 a wide spectrum of opinion 意見的不同幅度甚大。
pulse n. 1.脈搏；有節(jié)奏的跳動；【動物；動物學】脈沖(波)；脈動。 2.意向；傾向。 3.【音樂】拍子，律動。 His pulse was at a hundred. 他的脈搏(每分鐘)一百次。 a galloping pulse 急脈。 a high pulse 強脈。 a long [ slow ] pulse 緩脈。 a weak pulse 弱脈。 an action pulse (火箭)觸發(fā)脈沖。 a carry pulse 進位脈沖。 a driving pulse 起動脈沖。 feel sb.'s pulse ＝have one's fingers on the pulse of sb. 按某人的脈；探某人的意向。 stir sb.'s pulses 鼓動某人的情緒；使人興奮。 with quickened pulses 心跳得更快地。 vi. 脈跳動；震動；脈動。 vt. 使發(fā)生脈沖；用脈沖輸送(血等) (in out)。 n. 〔sing., pl. 〕豆類；豆。
pulse by pulse該電流檢測電路還能起到逐個脈沖; pulse逐脈沖
pulse on 脈沖啟動; 起動

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Then the effect is to steepen the flanks of the pulse spectrum .
因此在效果上是加大了脈沖譜翼部的陡度。
Numerical examples illustrated the spatiotemporal properties such as spectrum redshifting , narrowing and pulse distortion , etc . it is stressed that the " antibeam " behavior of ultrashort pulsed beams can be avoided , if a suitable truncation function is introduced to the initial pulse spectrum
數值計算例說明了在色散介質中會出現(xiàn)譜紅移、變窄、及脈沖形變等傳輸效應，而且對初始光譜引入截斷函數可以避免“非光束”行為。
Especially , in the solution of pulse spectrum , the negative frequency form of nls equation should be solved by the negative frequency form of fourier transformation , while the positive frequency form of nls equation is solved by the positive frequency form of fourier transformation
尤其在脈沖頻譜的求解問題中，如果采用負頻形式的非線性薛定諤方程則必須選取負頻形式的傅里葉變換；如果采用正頻形式的非線性薛定諤方程則必須選取正頻形式的傅里葉變換。
A technique for identifying total parameters ( titp ) is employed in the inverse problem of heat and moisture migration research in porous structures , accordingly the basic principle and implementary approach is presented to obtain the temperature and humidity dependent thermal and humid physical parameters . it is indicated theoretically that the applications of pulse spectrum technique ( pst ) to the inverse problem are feasible
在多孔結構內熱濕遷移反問題研究中引入全參數辨識方法，提出了求解溫度和濕度依賴型熱濕遷移物性參數的基本思想和途徑，從理論上指出了應用脈沖譜技術研究多層多孔結構熱濕遷移反問題的可行性。
High - frequency link power converters are receiving increasing attention . when the input frequency of ac - ac converter is quite high , such as 20khz or above , in order to make sure the converter switching action is restricted to the zero crossing point of the link voltage , the switching cycle becomes discrete pulse spectrums , however , the conventional pwm converters are ruled out because they would fail either to the efficiency or the low - distortion criteria
當交-交變頻器的輸入頻率非常高，通常為20khz時，為了在零電壓條件下實現(xiàn)逆變器開關管的通斷，變換器的開關時刻必須選擇在高頻交流電壓脈沖為零時，這意味著變換器開關時刻在時間軸上成為不連續(xù)的點，而常規(guī)的硬開關pwm變換器是將開關時刻選擇在任意時刻。