given adj. 1.一定的,特定的。 2.給予的,贈(zèng)送的。 3.〔數(shù)學(xué)推理等的獨(dú)立用法,表示條件)已知的,假設(shè)的。 4.愛好的,喜歡的,習(xí)慣的 (to)。 5.(文件等于…)簽訂的。 within a given period 在一定期間內(nèi)。 meet at a given time and place 在約定的時(shí)間和地點(diǎn)會(huì)面。 G- x, it follows that ....已知x, 則可推出…。 G- a protracted war,.... 只要是長(zhǎng)期戰(zhàn)爭(zhēng),…。 I am not given that way. 我不是干那種事的人。 be given romantically. 生性浪漫。 G- under my hand and seal this 10th day of May 1980 in ... . 一九八○年五月十日在…親筆簽訂。 be given to 喜歡,癖好 (be much given to reading and studying 喜歡看書學(xué)習(xí))。 n. (推理過程中的)已知事物。 It's taken as a given. 這被認(rèn)為已知。
Tdma allocates each user a different time slot on a given frequency Tdma在給定頻率為每個(gè)用戶分配不同的時(shí)隙。
The system can make the total signaling rate very close to the nyquist rate of given frequency band through the use of a lot of subchannels 該系統(tǒng)利用大量的子信道使得總的信號(hào)速率能夠非常接近給定頻帶的奈奎斯特速率。
Please give frequency of collection for wild resources , how much is the max collection for environment and the kinds of species not affected long time 3請(qǐng)說明野生資源的采集頻率(或強(qiáng)度) ,為了長(zhǎng)期不影響生態(tài)系統(tǒng)和物種的多樣性,可以采集的最大量應(yīng)該是多少?
Based on observations , planck in 1900 figured that a heated body releases light of a given frequency , or color , in discrete amounts called quanta 1900年,普朗克根據(jù)實(shí)驗(yàn)的觀察推論出,一個(gè)受熱的物體在放出某種頻率(或顏色)的光時(shí),是以稱為量子的不連續(xù)量放射。
In electronics , pertaining to an amplifier or circuit having a frequency respo nse characteristics that is uniform , within defined limits , across a given frequency range 在電子學(xué)中,用來修飾或說明一種放大器或電路,這種放大器或電路在一個(gè)給定的頻率范圍內(nèi),具有均勻的頻率響應(yīng)特性。
This thesis mainly analyze the structure of switch the circuit ' s form and some of manufacturing technic . under the given frequency band , the switch has flat capability of insert loss and isolation , and can satisfy the need of millimeter - wave system 本課題主要對(duì)開關(guān)的結(jié)構(gòu)、電路形式及制作工藝等方面進(jìn)行了一定的分析,使得毫米波鰭線pin管開關(guān)在給定頻率范圍內(nèi),具有平坦的插入衰減和隔離度特性,滿足毫米波系統(tǒng)的需要。
The experiments of motor without and with load on a given frequency are completed in this paper . these results are compared and analyzed . the feasibility of the scheme is validated through the analysis of the results 通過理論分析和對(duì)控制系統(tǒng)的設(shè)計(jì),作者在dsp電機(jī)控制教學(xué)實(shí)驗(yàn)及系統(tǒng)開發(fā)平臺(tái)上對(duì)六邊形磁鏈控制算法進(jìn)行了初步的開環(huán)實(shí)驗(yàn),完成了電機(jī)在一定頻率下空載和帶負(fù)載的實(shí)驗(yàn),并對(duì)實(shí)驗(yàn)結(jié)果進(jìn)行了對(duì)比分析,結(jié)果驗(yàn)證了系統(tǒng)設(shè)計(jì)方案的可行性。
The loaded - line - type , switched - line - type and reflection - type phase shifters are studied in this thesis . considering the defect of loaded - line phase shifter , a new type of switched - line with loaded - line phase shifter is proposed in this thesis . this design not only make advantageous debugging of circuit , but also minimize phase - error in a given frequency band 本文對(duì)加載線型、開關(guān)線型和反射型移相器進(jìn)行了分析研究,并針對(duì)開關(guān)線型移相器的缺陷,提出了一種加載式的開關(guān)線型移相器設(shè)計(jì)方法,不但便于對(duì)電路進(jìn)行調(diào)試,也減小了一定帶寬內(nèi)的相位誤差。
It mainly includes following aspects : in this paper , firstly implication of wavelet analysis in signal harmonic component extraction is presented in detail , and on this foundation signal given frequency band component extraction method is proposed . then we investigate frequency aliasing phenomenon , reason why frequency aliasing phenomenon is easy happened when wavelet is implied in field of motor fault diagnosis , and frequency bands where frequency aliasing phenomenon is easer happened , and put forward approved morlet wavelet analysis method which can effectively alleviates frequency aliasing phenomenon . third we set up vibration signal detected system , design experiments to obtain three groups of fault signals : eccentricity fault , mixed fault of eccentricity plus mild rub , mixed fault of eccentricity plus moderate rub , and process these data using analysis method proposed in this paper 首先對(duì)論文的選題以及相關(guān)背景進(jìn)行了探討,并對(duì)相關(guān)的小波基礎(chǔ)理論進(jìn)行了闡述,主要針對(duì)感應(yīng)電動(dòng)機(jī)的偏心故障和偏心+碰摩復(fù)合故障形式及相關(guān)的應(yīng)用算法進(jìn)行了詳細(xì)探討,主要工作內(nèi)容包括下面幾個(gè)方面:在論文中,首先對(duì)小波分析在信號(hào)的諧波分量提取中的應(yīng)用進(jìn)行了研究,在此基礎(chǔ)上,提出了信號(hào)的特定頻帶成分的提取方法;研究了小波分析的頻域混疊現(xiàn)象,探討了小波分析應(yīng)用于電機(jī)故障診斷領(lǐng)域時(shí)易發(fā)生頻域混疊現(xiàn)象的原因,以及混疊現(xiàn)象較易發(fā)生的頻帶,提出了可以有效減輕頻域混疊現(xiàn)象的改進(jìn)的morlet小波分析方法;搭建了振動(dòng)信號(hào)檢測(cè)系統(tǒng),設(shè)計(jì)實(shí)驗(yàn)采集得到三組故障數(shù)據(jù):偏心故障,偏心+輕微碰摩復(fù)合故障,偏心+中度碰摩復(fù)合故障,并對(duì)這些數(shù)據(jù)應(yīng)用本文提出的分析方法進(jìn)行信號(hào)處理,提取出的特征參數(shù)可有效區(qū)分這兩種故障形式;研究了基于matlab和labview的混合編程方法,完成了電機(jī)故障檢測(cè)系統(tǒng)的軟件開發(fā)。