单管的

The n-type gate modulation could be explained by the bending effect of valence band in the Schottky-barrier junction. The photoconductive diode and optical switch behavior was demonstrated for the first time from a C/CNX multi-walled nanotube junction with a Schottky barrier. Theconductivity of nanotube can be reversibly changed by 3 to 4 orders of magnitude when the 5 mW cm2 white lights was turned on and off.

器件原理是栅极静电场调节碳纳米管和CNx纳米管间的Schottky势垒的高度和宽度，从而影响载流子的传输。8首次利用单根CN万／C纳米管作为半导体材料制备了Schottky光导二极管和光开关。

Programs, AFITA and SHET, are developed, which can be used to compute the critical velocity for straight tube arrays and U-tube arrays of all sorts of tube arrangements in uniform and non—uniform flow and to calculate the response of tube due to flow induced vibration.

6开发了软件AFITA、SHET，能进行三角形、矩形排列的U型管和直管管阵、均匀流和非均匀流的临界流速分析，单根管自由振动和湍流诱发振动分析。

In addition,curves of ground settlement are dissymmetric for latter pipe jacking and can still be calculated with Peck formula.

水平平行顶管在工程应用中使用较多，由于管道之间的相互影响，水平平行顶管产生的沉降要大于单顶管，特别是

Emblica have many different forms and most of them have tails and their perforation plates divide into two types:(1)there is one simple perforation plate at each end of the vessel elements and (2) there is one simple perforation plate at one end of the vessel elements and two simple perforation plate at the other end;(3)a few vessel elements have special inclusions;(4)the intervascular pits are alternate pits;(5)the pits between the vessels and rays are mixed pits ,pits with transverse gashes and scalariform pits.

结果发现，余甘子次生木质部导管分子中存在着许多不同的样式，导管分子大多数具尾；其穿孔板存在着两种类型：(1)两端均为1个单穿孔板；(2)一端为1个单穿孔板；另一端为2个单穿孔板；(3)极少数的导管分子具有特殊的内含物；(4)管间纹孔式为互列纹孔式；(5)导管射线间纹孔式为混合型纹孔与横列刻痕状纹孔以及梯状穿孔。

SWNTs, consisting of just one layer of graphitic sheet, are of more concern because they are the most simple and exact one-dimensional model in so many nano-materials, but of much better properties.

人们更加关心的是单壁碳纳米管，因为它们只有一层管壁，是最简单、最典型的一维纳米材料，但是性能却远远优于多壁碳纳米管。

Based on membrane extraction and helical tube technique, the mass transfer performance of some membrane modules with a different helically wound hollow-fibre was studied with the system of 30%TBP-water and phenol as the solute. The effects of two phase flow rates, geometry of the membranes on mass transfer coefficients were investigated.

在对中空纤维膜萃取以及螺旋管技术进行充分调研的基础上，选择水-苯酚- 30 %TBP煤油为实验体系，溶质由水相萃取到有机相，在不同结构的单束螺旋状中空纤维膜器中研究了螺旋管纤维膜管内外流速以及螺旋管结构等因素对传质系数的影响。

To pay attention to carry out effective cardiopulmonary resuscitation, hemostasis by compression and deep vein intubation rapidly in the initial stage of emergency. The carotid shunt tube plays an important role in severe carotid injury and re-establishment process. We use external jugular vein to transplant and re-establish,which are rung with artificial blood vessels for the long distance carotid injury and achieved the best result. We expose as fully as possible for the hepatic venae and the posthepatic post caval injury,and adopt effective methods to stop bleeding and repair. The application of blood shunt pump could raise the success rate for those severe patients. The self-double vastransplantation with both ends being all trousers-style one opening solve some problems such as there are no suitable caliber self-transplantation blood vessels and the artificial blood vessels are easy to occur obliteration for long-term and so on for the great or middle blood vessels.We use improved Fogarty duct and anterograde intubation to eliminate thrombus could eliminate thrombus effectively and avoid accessory injury for the deep vein injury and extensive thrombosis.

抢救初期要注意进行有效的心肺复苏、压迫止血和快速进行深静脉插管；颈动脉转流管在严重颈动脉损伤重建过程中有重要作用；对长距离颈动脉损伤用颈外静脉移植外环包人造血管重建，可取得最佳效果；对肝静脉及肝后下腔静脉损伤，要充分暴露，采用有效方法止血和修复，对病情极危重的凶险性出血者，血液转流泵的应用可提高成功率；对大、中血管损伤，两端均为裤式单开口自体双血管移植，解决了无适宜口径自体移植血管和应用人造血管远期易闭塞等问题；对深静脉损伤并广泛血栓形成者，应用改进的Fogarty导管和顺行插管取栓法，可有效取栓并避免了副损伤。

METHODS: Forty extracted teeth with single straight canals and completed foramina were selected.

选择根尖孔发育完成的单根管离体牙40个，在生理盐水琼脂模型上，分别在根管内灌注25g/L次氯酸钠液、生理盐水、170g/LEDTA、30mL/L过氧化氢液和蒸馏水，在根管干燥条件下，用Root ZX测量牙齿操作长度，分析根管内容物对Root ZX测量值的影响。

Carbon nanotubes are a group of new kinds of carbon allotropes with one-dimensional structure.

碳纳米管(Carbon Nanotubes，CNTs)是碳的一种新同素异形体，依其结构的差异又可分为多壁碳纳米管(Multi-walled Carbon Nanotubes，MWCNTs)和单壁碳纳米管(Single-walled Carbon Nanotubes，SWCNTs)。

D. N big mouse model was successfully made by adopting single side kidney cutting with induction, then by 24 week continuos observation on the change of various values of kidney and function, through testing of immunity florescence, electro-scope and optical scope, what we can see from model group is that typical kidney small cell got hardened by knot, and discarded, and dead, also small tube withered, small cell of on base film got thick, cell capsule wall was fibred, and base film got double layered.

实验研究采用单侧肾切除加以链脲佐菌素诱导，成功地复制出糖尿病肾病大鼠模型，对其肾脏结构和功能的改变各项指标，连续进行24周动态观察，并进行免疫荧光、电镜、光镜检测，结果表明：糖尿病肾病模型组可见典型的肾小球节段硬化、废弃、坏死，有大量蛋白管型，肾小球管糖元空泡沉积及脂肪滴，肾小管萎缩，肾小球基底膜明显增厚，球囊壁纤维化，基底膜双层化，有一例结核性肉芽组织及钙化等病理变化。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。