peak vi. 1.瘦弱;消瘦,憔悴。 2.減少,縮小 (out)。 peak and pine 消瘦;憔悴。 peak2 n. 1.山峰,山頂;孤山。 2.(胡須等的)尖兒;尖端。 3.最高點(diǎn),絕頂;最大量;巔值,峰值;【物理學(xué)】波峰。 4.(衣著等的)尖形突出部;(帽子等的)鴨舌,遮檐。 5.〔方言〕岬,海角。 6.【航?!啃辫旒忸^;船頭[船尾]尖艙;錨爪。 a flood peak 洪峰。 the peak performance 最高生產(chǎn)率。 the after peak (船的)尾艙。 peak position 〔美國〕棒球聯(lián)賽的最高名次。 peak year 【統(tǒng)計(jì)學(xué)】最高紀(jì)錄年。 vt. 1.豎起,使成峰狀,使高聳。 2.使達(dá)到最高峰。 3.(劃船休息時(shí))直豎(槳等);(鯨魚)豎起(尾巴)。 She pursed her pretty lips and peaked her eyebrows. 她緊閉美麗的雙唇,豎起眉毛。 vi. 1.高聳,尖起;(槳等不劃時(shí))豎起;(鯨魚等)翹起尾巴。 2.達(dá)到最高峰。
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On the basis of a lot of experimental data based on the orthogonal test of pulse peak electric current , pulse width and pulse intermission , experimental mathematical models of electric spark forming of several sorts of materials are built up with multiple linear regression analysis 摘要用正交試驗(yàn)法對(duì)電火花加工中的峰值電流、脈沖寬度、脈沖間隔進(jìn)行設(shè)計(jì),在大量實(shí)驗(yàn)數(shù)據(jù)的基礎(chǔ)上,采用最小二乘法建立實(shí)用的多種材料的電火花加工實(shí)驗(yàn)數(shù)學(xué)模型。
It preliminarily establishes a set of test theory and technical approach to wind tunnel test . specifically speaking , it includes following work : ( 1 ) theoretical analyses on key parameters of ao effect were made . from maxwell equation , the computation formula for focusing intensity of ordered disturbance and the computation formula for pulse peak intensity were derived 初步建立起了一套氣動(dòng)光學(xué)風(fēng)洞測(cè)試試驗(yàn)的理論和技術(shù),完成的主要研究工作有: ( 1 )從理論上進(jìn)行了氣動(dòng)光學(xué)主要參數(shù)的分析,從麥克斯韋方程出發(fā),推導(dǎo)了有序擾動(dòng)的聚焦強(qiáng)度的計(jì)算公式及脈沖峰值強(qiáng)度計(jì)算公式。
We apply the agrawal ' s theory model of soa , and study the temporal characteristics of the output pulse for input picosecond optical pulses with different sharpness edges passing through a semiconductor optical amplifier , and find that the peak power and the pulse width of the output pulse depend on the input pulse peak power , the sharpness degree of the input pulse edge and the bias current of soa 本文應(yīng)用agrawal的關(guān)于soa理論模型,詳細(xì)研究了具有不同陡峭邊沿的皮秒超高斯光脈沖經(jīng)soa后的時(shí)域特性的變化,發(fā)現(xiàn)輸出脈沖的峰值功率、脈沖寬度與輸入脈沖的峰值功率、輸入脈沖邊沿的陡峭程度以及soa的偏置電流密切相關(guān)。