These antennas can cover GSM900/DCS/PCS/UMTS operation. In the chapter 2, the antenna is designed based on the concept of monopole antenna. Furthermore, the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching. In addition, to raise distance between radiation plane and ground will avoid capacitative effect effectually. In the chapter 3, the antenna is designed based on the concept of planar inverted-F antenna. Furthermore, that the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching is similar to chapter 2. But there is a difference in them. We can choose the short position to change input impedance at this structure. In the chapter 4, the antenna is designed based on the concept of planar inverted-F antenna which takes coupled-fed. It will produce the first mode and high-order mode near the frequency, 900MHz. The feature of this type is to reduce the volume effectually. This antenna can not only cover GSM900/DCS/PCS/UMTS operation but maintain good radiation efficiency. Finally, we will compare three antennas, and develop procedure with industrial view, and propose the prospect of the GSM/GPRS antenna in PND, as a conclusion.

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The capital parameters of the optical system are f′=1 600mm,2ω=18°×0.148°, F/number=F/10,and all surfaces are conicoid.

光學(xué)系統(tǒng)的基本參數(shù)為：焦距f′=1 600 mm国产一伦一色一情，視場角為2 w=18°×0.148°8050网6080午夜，相對孔徑為1／10，3個反射面均為二次曲面亚洲欧美日韩综合久久久久久。

Non-fluoride ionic number of Nd-F in dilute LiF-NdF3 melts and Nd-O-F species in dilute LiF-NdF3-Li2CO3 melts was researched by cryoscopic method,respectively.

采用冰點降低法分別研究了以LiF為溶劑的稀LiF-NdF3熔鹽中Nd-F離子團及LiF-NdF3-Li2CO3熔鹽中Nd-O-F離子團的非氟離子的個數(shù)巨乳老熟女人人操人人爽人人操。

The cardiomyocyte viability were detected by MTT assay for calculating the survival rate and the inhibitory rate of the virus. Myocardial F-actin and VEGF were analyzed by immunofluorescent staining with confocal microscopy. Mean fluorescent intensity of F-actin and VEGF were determined by flow cytometry.Results There is no toxicity on cardiomyocytes when PD is at concentration of 0.02 mmol/L and 0.2 mmol/L while there is toxicity at concentration of 2 mmol/L. CVB3 could reduce the viability of cardiomyocytes, depolymerize F-actin cytoskeleton and reorganize VEGF protein.

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In the BC〓F〓 and BC〓F〓 generation of Yannong15×Thinopyron intermedium hybrid, 4 octoploids which had chromosome number of 2n=56 and could form 28 bivalent at PMC MI, 14 disomic addition lines which had chromosome number of 2n=44 and could form 22 bivalent at PMC MI; three monosomic addition lines which had chromosome number 2n=43 and had the chromosome configuration of 21Ⅱ+1Ⅰ at PMC MI, 1 substitution line which had chromosome number 2n=42 and could form 21 bivalent at PMC MI were selected by observation of mitosis in root tip cell and meiosis in pollen mother cell.

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Based on an analysis of distribution pattern of hydrocyclone"s axial velocity, by changing the inlet flow rate Qi and split ratio Fand making an investigation in the effect of Qi and F on axial velocity field, the factors causing the forming of short-cut circuit and circulating flow are found. It is considered that the short-cut circuit and circulating flow are produced by the structure of the hydrocyclone, and can"t be eliminated completely, though they interfere the flow field inside a hydrocyclone and affect the separation accuracy. Test results show that, by increasing Qi and F and controlling them in a certain range, the separation efficiency of the hydrocyclone can be improved.

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To reduce the marking distortion , using the vertical 2 - dimension galvanometer distributing and f field lens focalize , the distance of the second galvanometer to the machining plane is the focus f . to avoid too hign temperature to distroy the resonance cavity because of too long marking time , cooling system and self - protector is used in the design

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Starting with commercial available tosylmethyl isocyanide and but-2-enoic methyl ester, pyrrolo[2,1-f][1,2,4]triazine derivatives was prepared by twelve-steps process in total yiled of 5.0%~8% via pyrrole and pyrrolo [2,1-f] [1,2,4] triazine ring formation, substitution and amination reactions etc.

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The heaviest solid (iridium, density r s = 22.6g/cm3, size f 4mm) and liquid (mercury, density r s = 13.6g/cm3, size f 5×2mm ) on the earth is acoustically levitated by greatly enhancing both the levitation force and stability through optimizing the geometric parameters of the self-developed single-axis acoustic levitator.

以上述理論為指導(dǎo)，對自行研制的單軸式聲懸浮裝置進行了優(yōu)化設(shè)計性色网国产，顯著提高了懸浮力和懸浮穩(wěn)定性欧洲一区，懸浮起自然界中密度最大的固體銥（ Ir ，密度 r s =22.6g/cm3国产AV妓女影院妓女影视，尺寸 f 4mm ）和液體汞（ Hg 久草网最新网址，密度 r s =13.6g/cm3、尺寸 f 5×2mm ）在线欧美视频免费观看国产。

The strains are arranged in order in terms of biological characteristics as follows: B_ 综合欧美日韩、B_5、 F-263、 B_1直接在线观看的毛片网站、 B_691精品剧情在线观看、 B_f、 B_(y2)91一级毛片、 B_(12)激情在线图片小说视频、B_z、 B_9淫秽网站在线看、 B_3中文字幕视频一区欧美、 B_(14)、 B_2一区二区毛片网站、 B_4伊人日日国产麻豆视频、 B_8、 B_(13)在线亚洲综合日本、 B_(y7)欧美性爱2页、 B_(11)、 B_(10)1024在线看片你懂得金沙人妻、 B_7成在线人免费视频一区二区三区、 B_(15); through comparing the mortality and muscardine rate to Monochamus alternatus larva of 21 strains, it is found that B_5、B_ and F-263 are superior to other strains.

比較生物學(xué)性狀黄巴一，結(jié)果從優(yōu)到劣排序是：B_久操黄片、B_5、F-263日韩欧美在线观看综合网另类、B_1影音先锋AⅤ资源夜先锋、B_6、B_f九九影院精品、B_(y2)日本免费一级高清大婬片、B_(12)、B_z欧美日韩性爱AAA视频、B_9亚洲另类中文字幕、B_3、B_(14)国内精品久久,久久久久精品、B_2、B_4中国美女一级毛片免费看、B_8国产精品夜色一区二区三区、B_(13)、B_(y7)美女AA毛片、B_(11)日韩黄色网站老司机懂的、B_(10)、B_7、B_(15)国产精品一区二区三区久久；比較各菌株對天牛幼蟲的致死率和白僵率欧美性爱激情综合，B_5、B_和F-263三個菌株優(yōu)于其它菌株欧美另类A片。