Simple method is described to functionalize the surface and to modify the structures of multi-walled carbon nanotubes grown on silicon substrates using chromium trioxide (CrO3) solution.

bstract 采用鉻酸溶液對碳納米管進行后處理日韩欧美亚洲色图，旨在修飾碳納米管的表面形態(tài)及改變碳納米管的表面結構，進一步增強碳納米管的場發(fā)射特性。

A simple method is described to functionalize the surface and to modify the structures of multiwalled carbon nanotubes grown on silicon substrates using chromium trioxide (CrO3) solution.

采用鉻酸溶液對碳納米管進行后處理，旨在修飾碳納米管的表面形態(tài)及改變碳納米管的表面結構狂插美女女阴道动态，進一步增強碳納米管的場發(fā)射特性。

A simple method is described to functionalize the surface and to modify the structures of multi-walled carbon nanotubes grown on silicon substrates using chromium trioxide (CrO3) solution.

采用鉻酸溶液對碳納米管進行后處理91视频人妻，旨在修飾碳納米管的表面形態(tài)及改變碳納米管的表面結構黄片爆草中文字幕，進一步增強碳納米管的場發(fā)射特性。

METHODS: Tubes of polyethylene, polyvinyl chlorid and silastic were established by 3.7 mm inner diameter, 3.5 mm external diameter, and 35 cm length, respectively.

制備聚氯乙烯管国产又粗又大在线观看、聚乙烯管www.BLA片、硅橡膠管的內(nèi)徑3.7 mm，外徑5 mm黄色精品视频在线观看精品免费，長35 cm。

In Horizontal Thin Film evaporator, the liquor spray into out surface of horizontal heating tube and part of them veaporates.

在臥管蒸發(fā)系統(tǒng)中国产欧美日韩综合精品区，料液噴淋在水平管的管外亚洲一区在线二区在线，其中部分產(chǎn)生蒸發(fā)，加熱蒸汽走管內(nèi)并發(fā)生冷凝国产精品15。

This kind of ignition is"flame of line shape like"ignition, in which, the phenomenon of 3-D flame propagation has been observed.

我們稱這種激波管為分部式激波管18禁特黄级福利网站，本文成功地實現(xiàn)了這種分部式激波管的運行。

On the basis of the existing sieving method of sieving thyratrons, serving the typical fuze detonating circuit as the circuit of sieving thyratrons, and applying the operation conditions of the typical fuze detonating circuit in the sieving circuit, we can measure more accurately the turn on voltage, trigger voltage, turn on time, and leak of electricity of the thyratrons.

在現(xiàn)有閘流管檢測方法的基礎上国产一级毛片久久久久久，將實際的引信起爆電路作為閘流管的檢測電路国产乱子伦农村XXXX琪琪777，將起爆電路的工作條件施加于檢驗電路，可以更準確地給出閘流管的導通電壓亚洲色图拍自拍、觸發(fā)電壓黄色激情污片网站，同時測量出閘流管的導通時間以及閘流管在關斷狀態(tài)下的漏電流。

Water inside vacuum heat- collection tubes; since the hot medium inside vacuum tubes floats up and cold one goes down due to respective specific gravity, hot and cold mediums convections up and down to cause the heat conduction, furthermore transfer the heat to the related working medium in the heat tubes, the working medium sorbs the potential heat and becomes steam to rise up to the condensing section from the tube heat evaporating section; it emits the heat in condensing section to change again into liquid working medium; it flows back to evaporating section under the gravity action, the emitted heat is transferred into the water inside water tank or tube group by means of the heat-conduction through heat tubes condensing section; it makes the cold water in water tank into hot water in the repeated way.

陽光透過全玻璃真空集熱管的外玻璃一级a在线爱免费观看欧美，照射到涂覆在內(nèi)玻璃管外表面的選擇性吸收涂層上好爽好湿好大好疼视频，涂層將太陽的輻射能吸收并轉化為熱能，通過內(nèi)玻璃管壁導熱成人无码秒播在线观看视频免费下载，傳遞給真空集熱管內(nèi)其液態(tài)傳熱介質(zhì)欧美乱伦视频啊啊，由于真空集熱管內(nèi)熱的介質(zhì)因比重小而上浮，冷的介質(zhì)因比重大而下沉欧美全黄视频，冷熱介質(zhì)上下對流傳熱和導熱亚洲tv精品一区二区三区，再通過熱管的金屬壁導熱，將熱量傳遞給熱管內(nèi)其相變工質(zhì)久久国产精品特及毛片，工質(zhì)吸收汽化潛熱而變成蒸汽厕拍网站，由熱管蒸發(fā)段上升到冷凝段，在冷凝段放熱冷凝美女曰逼黄色网站，又變成液態(tài)工質(zhì)55亚洲精品，在重力作用下流回蒸發(fā)段，所放出的熱量通過熱管冷凝段金屬管壁導熱，傳遞給水箱或聯(lián)集管內(nèi)的冷水性爱网站流畅不卡，周而復始高清国产在线观看播放网站大全，于是便將水箱內(nèi)的冷水全部加熱成熱水。

Methods: During a three-year period, 84 DPV and 62 OSV were implanted by two neurosurgeons for adult patients with communicating hydrocephalus. Patients medical charts were analyzed retrospectively for demographic data, diagnosis at shunt implantation, valve type, incidence of shunt complications and surgical revision rate.

馬偕醫(yī)院神經(jīng)外科在三年期間共收錄一百四十六例成人交通性水腦癥亚洲免费视频在线视频，其中84例使用DPV引流管全免费精品一级毛片视频，62例使用OSV引流管，由病例分析其病人的年紀分布中文字幕免费在线播放，致病原因天天做天天爱天天爽综合网，DPV引流管的壓力種類，術后并發(fā)癥及引流管再次手術的機率久久久久精品免视频94久久精品视频。

Salt incrustation often happens in heat exchange tubes of salt making evaporator.

制鹽蒸發(fā)器換熱管常常出現(xiàn)結鹽現(xiàn)象国产老太性交，本文通過實驗對鈦管式制鹽蒸發(fā)器換熱管的污垢熱阻特性進行了研究。