The contents of trace elements of Ag, Cu, Zn, Fe, Pb, Sb and Bi in gold foil were determined directly by ICP-AES method and the gold content of gold foil was calculated. The authors obtained optimal working parameters of the instrument and studied the selections of power in analytic conditions and analytic curve, the optimization of the pressure of nebulizer as well as the influence of lifting capacity of the sample.

摘 要：研究了ICP-AES法直接測定金箔中的Ag欧美ⅩXXA片免费看、Cuwwwjizzcom、Zn婷婷,五月天综合、Fe亚洲视频乱伦专区、Pb、Sb谢精视频、Bi微量元素在线观看AAA黄片，通過差減法計(jì)算出金箔的含金量，確定了儀器最佳工作參數(shù)欧美专区地址，研究了分析條件中功率的選取日本在线观看视频网站、分析線的選擇、霧化器壓力的優(yōu)化久久AA视频、樣品提升量的影響欧美一级a卡片免费观看，并對金箔中Au基體可能存在的干擾等進(jìn)行了探討。

along with the development of digital technology,digital filters are widely used in many fields,this paper introduces how to design a iir digital notch filters in matlab environment.the design of digital notch filters can be achieved through three steps:firstly,the design of analog lowpass filter; secondly,it is analog lowpass to analog band stop filter conversion;at last,using the bilinear transformation make the analog notch filters change into digital notch filters.the paper also introduces how to design the transfer function of the digital notch filters using all the zeros and farthest points at the same time,it also introduces the program of the digital notch filters under butterworth analog lowpass prototype.

摘 要：隨著數(shù)字技術(shù)的發(fā)展中国特黄强奸A片，數(shù)字濾波器在許多領(lǐng)域得到廣泛的應(yīng)用。研究一種在matlab語言環(huán)境下設(shè)計(jì)iir數(shù)字陷波濾波器的方法欧美亚洲色图人妻，在數(shù)字陷波濾波器設(shè)計(jì)過程中，先進(jìn)行模擬低通濾波器的設(shè)計(jì)黑白xxxxx，然后進(jìn)行模擬低通/模擬帶阻濾波器轉(zhuǎn)換国产精品推拿一区二区三，最后采用雙線性變化法將模擬陷波濾波器轉(zhuǎn)化成數(shù)字陷波濾波器99国产精品视频。提出一種用所有零點(diǎn)和極點(diǎn)來表達(dá)數(shù)字陷波器傳遞函數(shù)的方法，同時(shí)給出以巴特沃斯模擬低通為原型設(shè)計(jì)數(shù)字陷波濾波器的程序黄色视频,黄色网站,黄色视频免费观看。。關(guān)鍵詞：無限沖激響應(yīng)jiujiure精品；巴特沃斯濾波器；數(shù)字陷波濾波器人人操操操操操操操操操操；matlab在线免费AV；雙線性變換

In this paper, a new structure of Low Voltage Differential Signal transmitter circuit is presented.

摘 要：本論文給出一種用0.18μm的CMOS工藝設(shè)計(jì)，工作電源電壓是1.5V精品国产点击网站，可實(shí)現(xiàn)為2.5Gbps數(shù)據(jù)流的發(fā)送的LVDS(Low Voltage Differential Signal)發(fā)送器。

Objective To investigate the therapeutic effects of arc blade holder in extracapsular cataract extraction and intraocular lens implantation through small incision.

目的 探討弧形刀片夾持器夾持剃須刀片做小切口白內(nèi)障囊外摘出人工晶狀體植入術(shù)的效果99视屏在线。

The spore germination and gametophyte development of 21 ferns are studied. It indicates that :① the development period of prothallium and young sporophyte of the same species is different due to seeding time of spores;② the optimal temperatures of spores germination and gametophyte development of 21 ferns are about 15 -24 ℃;③ the rate of spore germination of rare ferns is much lower than the ferns which occur large populations in nature;④ the treatment with GA 3 can accelerate the germination of the spores;⑤ the prothallium changes from large to small, green to yellow when young sporophyte comes out. The prothalliums of all 21 ferns die away after the appear of the 3rd leaf of sporophytes;⑥ shapes of the 1st and 2nd leaves of the young sporophyte are different from those emerged later;⑦ spores cultured in dark can not germinate;⑧ a prothallium can develop only one young sporophyte though it has many archegoniums, and the spore propagation with leaf mould substrate is an economical method.

摘 要：以腐葉土為培養(yǎng)基質(zhì)，對 21 種蕨類植物進(jìn)行了孢子萌發(fā)和原葉體發(fā)育的研究成年人看免费视频大，結(jié)果表明：①不同時(shí)期播種的同種蕨類的孢子国产精华Av在线导航网站，發(fā)育出原葉體和幼孢子體所歷經(jīng)的時(shí)間長短不同；②孢子萌發(fā)和配子體生長發(fā)育的適宜溫度約為 15 ～ 24 ℃国产人与动人物a级毛片；③稀有蕨類的孢子萌發(fā)率低拍拍黄色网站，而在野外能形成較大種群的蕨類的孢子萌發(fā)率高欧美xxxxwwww；④用 GA 3 處理孢子可以促進(jìn)萌發(fā)；⑤當(dāng)原葉體上長出幼孢子體時(shí)国产日韩视频合集一区，原葉體由大變小三级电影网址，由綠變黃男女猛烈无遮挡免费视频滚床， 21 種蕨類的原葉體都在幼孢子體上長出第 3 片葉時(shí)消失；⑥幼孢子體上長出的第 1 自拍偷拍网页、 2 片葉在形態(tài)上與以后長出的葉不同欧美国产综合操逼视频；⑦孢子萌發(fā)需要光；⑧ 1 片原葉體盡管有多個(gè)頸卵器三级黄毛，但僅發(fā)育出 1 株幼孢子體先锋影音最新资源网站；⑨利用腐葉土進(jìn)行蕨類孢子繁殖是一種經(jīng)濟(jì)實(shí)用的繁殖方法欧美性爱影视一区二区三区。

Results 86 cases of polyacrylamide hydrogel were injectable implant in the treatment of non-organic change. 32 cases only because of psychological pressure,and urgent requirement for seeking out hydrogel,Were treated using suction liposuction methods.Induration significantly complicated and tough for using semi Central areolar incision under half,pumping out water gel thoroughly Abstract induration.Hydrogel into pectoralis major,who may armpit transverse incision after augmentation.

結(jié)果：86例聚丙烯酰胺水凝膠注射式隆乳術(shù)后的就診者中超污国产黄网站在线观看，對無明顯器質(zhì)性改變，僅因心理壓力過大而迫切要求取出水凝膠的32例求術(shù)者，采用脂肪抽吸式方法抽吸十八以下禁止观看的网站；對于并發(fā)硬結(jié)明顯大而硬者，采用乳暈下1/2半環(huán)切開亚洲中文字幕久久精品，抽吸水凝膠徹底摘出硬結(jié)；水凝膠注入胸大肌內(nèi)不卡视频在线一区二区、后間隙者可采用腋下橫切口三级黄片a，分離胸大肌將乳腺后間隙水凝膠向胸大肌下間隙擠出抽吸到清亮液體后自拍亚洲国产，同期放入假體于胸大肌后間隙一级毛片无码不卡直接观看。

Specially,it introduced the process and algorithm of error compensation which has been effective on controlling the measure error within the range of requirements of the whole system.

摘 要：為了提高電池檢測系統(tǒng)中電池測量的精度AV天堂永久网，對MAX197模數(shù)轉(zhuǎn)換器的主要誤差源進(jìn)行了較詳盡的分析與測試在线观看黄色视频一站，在此基礎(chǔ)上提出了提高測量精度的建議和處理方法日本男人插女人，其中對誤差補(bǔ)償方法最新男女一级性爱视频在线，給出了具體的過程和算法日韩一级AV不卡毛片完整版，在實(shí)際應(yīng)用中已有效的將測量誤差控制在系統(tǒng)的要求范圍內(nèi)。

Beijing University of Technology, Beijing 100022, ChinaAbstract A quasi two-stage compression heat pump system coupled with ejector was designed to improve the performance and widen the range of the operation conditions of heat pumps.

摘 要：為了進(jìn)一步改善熱泵系統(tǒng)性能和擴(kuò)大其運(yùn)行工況范圍国产精品网站在线，將結(jié)構(gòu)簡單欧美日韩国产综合在线一区、無運(yùn)動(dòng)部件且能較好地適應(yīng)兩相流工況的噴射器引入準(zhǔn)二級壓縮熱泵系統(tǒng)，構(gòu)造出準(zhǔn)二級壓縮-噴射復(fù)合熱泵系統(tǒng)。

Beijing University of Technology, Beijing 100022, ChinaAbstract A quasi two-stage compression heat pump system coupled with ejector was designed to improve the performance and widen the range of the operation conditions of heat pumps.

摘 要：為了進(jìn)一步改善熱隔膜真空泵系統(tǒng)性能和擴(kuò)大其運(yùn)行工況范圍中文字幕人妻偷伦在线视频，將結(jié)構(gòu)簡單18岁禁止入内网站、無運(yùn)動(dòng)部件且能較好地適應(yīng)兩相流工況的噴射器引入準(zhǔn)二級壓縮熱隔膜真空泵系統(tǒng)，構(gòu)造出準(zhǔn)二級壓縮-噴射復(fù)合熱隔膜真空泵系統(tǒng)人人操人人人人摸人人干。

enucleation scissors：眼球摘出剪

Entz booster 恩茲升壓器 | enucleation scissors 眼球摘出剪 | enucleation spoon 眼球摘出匙

extirpator：摘除器;摘出器

摘除 extirpation | 摘除器;摘出器 extirpator | 特級;特級品;額外 extra

tonsil guillotine：扁桃體鏟除刀

tonsil enucleator 扁桃體摘出器 | tonsil guillotine 扁桃體鏟除刀 | tonsil haemostatic forceps 扁桃體止血鉗

picked ports：被選擇港口

picked cotton 手工摘棉 | picked ports 被選擇港口 | picker 十字鎬,檢出器,彈棉機(jī),清棉機(jī),起模針

extraction thimble：浸出用濾紙筒

extraction hook 摘出鉤(眼) | extraction thimble 浸出用濾紙筒 | extractor 拔出器,提取器

enucleator：摘除器

enucleator 摘出器 | enucleator 摘除器 | enucleator 剜出器

enucleator：摘出器

enucleation 摘出術(shù) | enucleator 摘出器 | enucleator 摘除器

tonsil enucleator：扁桃體摘出器

tonsil elevator and dissector 扁桃體剝離器 | tonsil enucleator 扁桃體摘出器 | tonsil guillotine 扁桃體鏟除刀