writing n. 1.寫,寫作,執(zhí)筆;習(xí)字,書法。 2.文件,契據(jù);銘。 3.〔pl.〕著作,作品。 4.筆跡,手跡。 at this writing 寫這個(gè)的時(shí)候;本記者發(fā)稿時(shí)刻。 be busy with one's writing 忙于寫作。 in writing 寫,用書面。 put ... in writing 把…寫成文字。 writing on the wall 危機(jī)緊迫的征兆。
beam n. 1.梁,棟梁,桁條;(船的)橫梁。 2.船幅;(動(dòng)物、人的)體幅。 3.(秤)桿,杠桿,(織機(jī)的)卷軸,經(jīng)軸;(鹿角的)主干;車轅;犁柄;鋤把。 4.(光線的)束,道,柱;【物理學(xué)】波束,射束。 5.(笑容、表情等的)煥現(xiàn)。 6.【無(wú)線電】有效播聽(tīng)范圍。 7.【航空】信號(hào)電波,指向電波。 a beam of light 一束光線。 the common beam 標(biāo)準(zhǔn)秤;準(zhǔn)則。 beam and scales 天平。 a beam of delight 高興的表情,笑逐顏開(kāi)。 an erector beam 【火箭】(發(fā)射時(shí)調(diào)整導(dǎo)彈位置的)千斤頂。 radio beam 無(wú)線電領(lǐng)航信號(hào)。 a landing beam 【航空】降落指示波。 abaft the beam = before the beam. a beam in one's eye 自己本身的大缺點(diǎn)〔與他人目中之刺相比,自己眼中有梁,源出《圣經(jīng)》馬太福音〕。 before the beam 【航?!空龣M前。 broad in the beam 〔口語(yǔ)〕臀部闊大。 fly the beam 【航空】按指向電波飛行。 fly the wet beam 【航空】順著河流飛行。 kick [strike] the beam 1. (秤一方)翹起;過(guò)輕,不足抗衡,無(wú)足輕重。 2. 輸,遭受失敗。 off the beam 脫離航向,不順利;不對(duì)頭;做錯(cuò)。 on the beam 1. 【航?!颗c龍骨垂直地,正橫地。 2. 在航向上;對(duì)頭,做對(duì)。 on the port [larboard] beam 【航海】左舷正橫前。 on the starboard beam 【航?!坑蚁险龣M前。 on the weather beam 【航?!坑龣M風(fēng)。 ride the beam = fly the beam. vi. 1.輻射,發(fā)光,閃光。 2.微笑,眉開(kāi)眼笑。 vt. 1.發(fā)射(光線、電波)。 2.向…放[播]送。 3.(用雷達(dá))探測(cè)。 4.(用波束)導(dǎo)航(飛機(jī)等)。 beam the program at America 向美國(guó)播送節(jié)目。 the sun beaming overhead 紅日當(dāng)頭照。 beam upon 看著…微笑。 beam with joy 眉飛色舞,笑逐顏開(kāi)。
Photoinduced birefringence and holographic recording were performed by using ar laser ( 488 nm ) as writing beam and he - ne laser ( 632 . 8 nm ) as reading beam 寫入光為線偏振壯離于激光,讀出光為線偏振he ne激光,信號(hào)山ccd多道分析器接收。
Employing writing beams with appropriate intensity distributions and external electric fields along proper directions , arrays of planar and channel waveguides can be fabricated in various pr crystals 研究結(jié)果表明:采用合適的光場(chǎng)強(qiáng)度分布以及合適的外加電場(chǎng)可以在不同光折變晶體中寫入平面波導(dǎo)陣列和通道波導(dǎo)陣列。
Fourthly , the incident intensity threshold of the fanning effect in twm was measured in the ce : knsbn crystal , and it is about 20mw / cm , while using 632 . 8nm red light with e polarization as writing beam 實(shí)驗(yàn)發(fā)現(xiàn)在e偏振光寫入情況下, ce : knsbn晶體中光扇存在寫入光強(qiáng)度閾值特性,當(dāng)寫入光強(qiáng)大于20mw cm ~ 2時(shí)光扇效應(yīng)明顯增強(qiáng)。
The blocking - layer and the dielectric mirror separate the write beam and the read beam , and the dielectric mirror reflects the read light also . in order to separating the write beam and the read beam quietly , and reflecting the read bean in the most limit 液晶光閥的阻光層和介質(zhì)鏡層起著隔離寫入光和讀出光的作用,介質(zhì)鏡層還起著反射讀出光的作用。
( 3 ) the bragg - shift phenomenon of transmission holographic grating is investigated in theory and experiment . as a result , the bragg - shift phenomenon will be restrained when the intensity ratio of initial writing beams is one 對(duì)透射體全息光柵在讀出過(guò)程中的布拉格漂移現(xiàn)象進(jìn)行了理論和實(shí)驗(yàn)分析,得出在本實(shí)驗(yàn)條件下,當(dāng)寫入光強(qiáng)比為1 1時(shí)可以很好地抑制布拉格漂移現(xiàn)象的發(fā)生。
The main contents of this dissertation are as follows : ( 1 ) according to the set of equations governing the pr process , index changes in pr crystals induced by writing beams with different intensity profiles are theoretically analyzed and numerically simulated 所開(kāi)展的工作以及得到的結(jié)論如下:從光折變動(dòng)力學(xué)方程組出發(fā)對(duì)光折變晶體中光致折射率變化進(jìn)行了理論分析,并建立了由寫入光的強(qiáng)度分布得到光致折射率變化分布的數(shù)值模擬方法。
As the results , firstly , some steady parameters were determined , including the gain coefficient , diffraction efficiency of the volume grating and response time t1 of twm under different total incident intensity i0 , ratio of two writing beams mo , angle between two writing beams 2 and polarization conditions 論文給出了不同寫入光強(qiáng)比、寫入總光強(qiáng)、寫入光夾角及偏振光下ce : knsbn晶體的兩波耦合增益系數(shù)、衍射效率、響應(yīng)時(shí)間的變化規(guī)律。
At the different recording angles , the raman - nath diffraction and bragg diffraction phenomenon are observed , respectively . then , the wavelength selectivity and the relationship of diffraction efficiency and polarization state are discussed when the recording angle of 60 ? formed by two writing beam 分別觀察到了寫入光束夾角不同時(shí)光柵的拉曼-奈斯衍射和布拉格衍射現(xiàn)象,并對(duì)雙光束夾角為60時(shí)寫入光柵的波長(zhǎng)選擇性及衍射效率與入射光偏振態(tài)的關(guān)系進(jìn)行討論。