查询词典 surface

On the silicon substrate an epitomical layer is made,where IC components are formed subsequently.In an CVDprocess,the silicon substrates places in a vacuum crystal tube are first heated to 1,600°C by high-frequency radio power and then H⒉Cl⒉Si and certain gaseous compounds of As or P is injected into the tube to make a deposit of several um on their surface.Ions of As or P are impurity deliberately added to the singl-crystalline silicon structure to supply electrons that transmit "negative"current in the silicon crystals,which is called n-type silicon.Bcan be added as impurity to produce p-type silicon that supplies holes for transmitting "positive"current.Whether a p--type of an n-type silicon substrate is needed depends on what type of transistors is expected to be manufactured on it:n-p-n type of p-n-p type

对硅衬底上的一个epitomical层了，而IC零件形成subsequently.in一个CVD法（化学气相depsition ）过程中，硅衬底的地方在真空晶体管均先加热至1600 ° C时，由高频率的无线电功率，并然后h ⒉氯⒉硅和某些气态的化合物，砷或P ，是注入试管，使存款的几位嗯对他们surface.ions的作为或P是杂质刻意添加到单结晶硅的结构，以供应电子传递的&负面&目前，在硅晶体，即所谓N型silicon.b ，可以增加一条，作为杂质产生的p型硅供应孔转递&积极& current.whether一个P -类型的一个n型硅衬底，是需要靠哪些类型的晶体管预计将在制造上它： NPN型的PNP型

By alcohol method, based on single factor test, using response surface methodologyto study effect of extraction time, ethanol concentration and solid-liquid ratio on pentacyclic triterpenes extraction from Bamboo.

本研究采用乙醇提取法，在单因素试验的基础上，应用响应曲面设计(Respones surface methodology， RSM)研究了提取温度、乙醇浓度和料液比对竹叶五环三萜提取得率的优化工艺。

The compounds that isolated from Clausena excavata and Rubia cordifolia can reduce the secretion of hepatitis B surface antigen.

此外亦从过山香﹝Clausena excavata﹞与茜草﹝Rubia cordifolia﹞中筛选出一些化合物与其结构相似物能够抑制B型肝炎病毒表面抗原﹝hepatitis B surface antigen， HBsAg﹞的分泌。

The nano-silica partrcles are organic-modified by E-MA-GMA elastomer through direct solvent process,the organic-modify process mechanism was studied,and the dispersing of modified nano-silica particles in tetrachloroethane solvent and PBT were investigated.FIRT,TEM,SEM results indicated that the epoxy group of E-MA-GMA could react with the hydroxyl groups of silica surface,helped to reduce the interactions of nano-silica particles particles and improve the dispersion of nano-silica on PBT and the interfacia...

surface modification ；溶液法利用功能化弹性体E-MA-GMA对纳米二氧化硅进行表面有机化修饰改性，分析了表面改性过程机理，同时考察了改性后纳米二氧化硅在四氯乙烷溶剂和PBT基体中的分散情况；FIRT、TEM、SEM测试结果表明，E-MA-GMA的环氧基团与纳米SiO_2的—OH基团发生反应，降低纳米二氧化硅粒子间的相互作用力，改善了纳米二氧化硅在PBT基体中的分散，提高复合材料的相容性。

It was shown that the area-averaged temperature profile also can not be obtained by means of a system with multi-laser sources in the unhomogeneous atmospheric surface layer.

标 签 折射温度梯度大气近地面层非均匀 refraction temperature gradient atmospheric surface layer unhomogeneous

Fluorescence occurs when ultraviolet radiation from just outside the visible spectrum is absorbed and re-emitted as visible light,thus increasing the total amount of light refected from a surface.Fluorescent brightening agents are commonly added to paper and boards to make them brighten and whiter and to increase the possible density range that can be achieved when printing on them.

荧光发生时，紫外线辐射从外面可见光谱吸收和再音量为可见光，从而增加总额轻refected从surface.fluorescent增白剂补充常用纸张和议会，使他们 brightenandwhiter，并把可能的密度范围时，才能得到印刷出来。

The Bamboo Creek wetland system has a channel configuration, which consists of a subsurface flow unit (4 m × 50 m), a free water surface flow unit (4 m × 150 m), and an SSF unit (4 m × 50 m) connecting in series. Macrophytes with functions of pollutants purification and landscape values, such as cattail, cyperus, vetiver grass, reed, and canna, were planted in wetlands.

竹溪湿地系统由三个单元串联所组成，第一单元为表面下流动湿地(SSF，subsurface flow system，长50m，宽4m，200 m2)，第二单元为表面流动式系统(FWS，free water surface system，长150m，宽4m，600 m2)，第三单元为SSF湿地(长50m，宽4m，200 m2)。

Localized surface plasmon resonance of metal nanostructures was also observed by dark-field optical microscope.

另外，金属奈米结构之局部表面电浆共振特性(localized surface plasmon resonance)也可在光学显微镜之暗视野下观察其所呈现的颜色。

Methods Ten mature Wistar rats were divided into normal control group (5 rats) and adenovirus (E1, E3-Deleted and carried math1 and enhanced green fluorescent protein report gene, Ad-Math1-EGFP) scala vestibuli transfer group (5 rats). Right ears of the Ad-Math1-EGFP transfering group rats were deliveried 5μl Ad-Math1-EGFP (physical tite 2.1×10^11v.p./ml) into cochleas through the way of drilling scala vestibuli of cochlear basal turn. As a control, the normal group received nothing to inner ear. In order to estimate functional condition of vestibule and cochlea, the click-evoked potentials on the surface of the cervical dura mater, auditory brain stem response and swimming time were recorded in all rats at 7 days after treatment, and then histologic and morphologic observation were carried out after animals were sacrificed. Results All animals' morphologic observation showed that inner ear hair cells were normal after transfer.

将10只成年Wistar大鼠分为正常对照组和缺失E1、E3基因片段且构建有Math1基因和绿色荧光蛋白报告基因的复制缺陷型腺病毒(adenovirus-Math1-enhanced green fluorescence protein， Ad-Math1-EGFP)前庭阶导入组，每组5只，实验组大鼠在右耳通过耳蜗底回前庭阶打孔的方法导入物理滴度为2.1×10^11v.p/ml的上述腺病毒5μl，对照组大鼠不做任何处理。7天后对动物进行颈髓硬膜外短声诱发电位(click-evoked potentials on the surface of the cervical dura mater， CDM-CEP)、听性脑干反应阈值检测和游泳试验，评价前庭和耳蜗功能，然后将动物处死进行组织形态学观察。

Objective To evaluate the influence of the frequency,the weight and the motion angle on the stress and the fatigue of the forearm extensors in repetitive wrist extending at low force loading level with surface electromyography.

目的用表面肌电描记术(surface electromyography，SEMG)评价低力量负荷下，频率、重量和运动角度3个负荷因素对重复性伸腕运动中前臂肌肉应激状态和疲劳的影响。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。