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The mechanism of two phenomena is rerealed by the perturbation theory.

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Leaves crowded toward apex of stems or spaced along distal part of stems, sessile or petiolate; petiole to 8 cm, base amplexicaul; leaf blade usually sword-shaped to elliptic-lanceolate, veins truly parallel from base, lateral veins absent.

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Thin, hollow, and pointed, these glasslike stems grow from tiny, barely formed white bulbs found in clumps just above the soil level.

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At the same time, there was remarkable difference in the calcium distribution on the wall of micropylar canal between self-pollinated and cross-pollinated ovules: abundant calcium precipitates were found on the wall of self-pollinated ovules, whereas none on cross-pollinated pollen.

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basing on optics orthogonal codes,this paper proposes a new design scheme of three-dimension optics orthogonal codes.in this scheme,the optics orthogonal codes can be coded not only in space-domain,in time-domain,but also in frequency-domain.it has good auto-cross relativity properties.the simulation figures show that can enlarge the coeds capacity and improve the optics optical communications system performance.so it will be of interesting in coming high dense communication system.

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dense in itself set：自密集

dense in itself 自密的 | dense in itself set 自密集 | dense set 稠集

dense in itself：自密的

dense 稠密的 | dense in itself 自密的 | dense in itself set 自密集

dense set：稠集

dense in itself set 自密集 | dense set 稠集 | dense subset 稠子集

handover：自動(dòng)切換

自動(dòng)切換(handover)功能目前世界發(fā)送國家都正在積極進(jìn)行4G技術(shù)規(guī)格的研究制定,以期在全球4G規(guī)格制定中享有發(fā)言權(quán).4G的各項(xiàng)運(yùn)行標(biāo)準(zhǔn)將由國際電信聯(lián)盟(ITU)電信標(biāo)準(zhǔn)局決定.新一代無線通信技術(shù)在美國及日本等發(fā)達(dá)國家已經(jīng)進(jìn)入密集的研發(fā)和市場(chǎng)化階段.新的研究包括網(wǎng)絡(luò)結(jié)構(gòu),

silver：銀

文章摘要: "銀"(Silver)已取代黃金美容,成為了當(dāng)下美容界最熱議的話題. 當(dāng)時(shí)尚的指針隨著氣溫一起日益轉(zhuǎn)cool,以"酷"為標(biāo)的男人"妝"卻溫度日升. 兒童品牌"喜之郎"自面世投放市場(chǎng)以來,隨著其廣告高密集度的投播,

spleen：脾

淋巴結(jié)中的B 細(xì)胞可識(shí)別和結(jié)合游離的或被濾泡樹突狀細(xì)胞(FDC)脾(spleen)是胚胎時(shí)期的造血器官,自骨髓開始造血后,脾演變成人體最大的1. 白髓 白髓(white pulp)為密集的淋巴組織,由圍繞中央動(dòng)脈而分布的動(dòng)和脾血竇(splenic sinus)組成.

Purkinje system：蒲肯野系統(tǒng)

電沖動(dòng)自房室結(jié)繼續(xù)下行,即達(dá)希氏束(His bundle)及蒲肯野系統(tǒng)(Purkinje system)內(nèi),后者是心室內(nèi)特化的傳導(dǎo)系統(tǒng). 蒲肯野系統(tǒng)內(nèi)的傳導(dǎo)速度(3~4m/s)約為普通工作肌細(xì)胞傳導(dǎo)速度(0.3~1 m/s)的4倍. 原因是蒲肯野細(xì)胞更長,縫隙連接的分布也更密集.