查询词典 present simple

In this study, we present a simple method to functionalize the surface of multi-wall carbon nanotubes grown on silicon substrates by thermal chemical vapor deposition.

摘要本研究中，利用一简单的处理方法对热化学气相沉积法所成长的奈米碳管表面做化学处理。

We present a simple method to functionalize the surface and to modify the structures of multi-walled carbon nanotube grown on silicon substrates using argon plasma. The as-grown CNT films prepared by thermal chemical vapor deposition were treated with Ar plasma.

在此研究中使用非反应性的Ar电浆子蚀刻，处藉由热化学气相沉积法在矽基板表面所积的多层米碳管，并观察处过后的米碳管表面型态与结构上的改变及其对场发射特性的影响。

But this doesn't deny the second circulation that we supposed, it just explains that it is a development based on model effect, not a simple circulation , So under the present background of shortage of capital and imbalance development of regions, we think indraught FDI of our country is still in the first circulation.

要实现从存量增加到增量增长的第二次飞跃，我国还必须在制度环境的持续改善、产业结构的进一步调整以及融资环境的根本改变等方面有实质性的进展。

Leaves opposite; stipules present, sometimes interpetiolar; leaf blade simple, base not glandular, margin entire, pinnately or palmately 3-veined.

叶 对生托叶宿存，有时位于叶柄间；单叶，基部不具腺，边缘全缘，羽状或掌状3脉。

Although simple in concept, the details of intertwining multiple base classes can present tricky design-level and implementation-level problems.

尽管概念简单，缠绕多个基类的细节可能会带来错综复杂的设计问题或实现问题。

After a further analysis, the two intralingual factors, verb salience and temporal adverbials, are found to significantly affect simple past and present perfect use and their tense marking.

通过测试动词突显度和时间状语两种语内因素对一般过去时和现在完成时的影响，发现他们能够显著影响其使用和时态标记。

We have developed a simple and easy-handling procedure for copper-catalyzed cyanation of aryl halides using K4[Fe_6] as the cyanide source. The present procedure has ligand- and base-free advantages, and was accomplished under the conditions of exposure to the air without degassing of the solvent.4. We carried out the selective control of preparation for phenyl ether and phenol from iodobenzene with 10 mol% of Cu_2·H_2O as the catalyst under the condition of exposure to air.

这个程序有无配体无碱的好处，并能够在暴露于空气的条件下进行，溶剂也不用脱气。4、空气气氛下，用10 mol%的Cu_2·H_2O催化碘苯偶联，实现了制备二苯醚和苯酚的选择性控制：即在有(来源：Aa955BC55论文网www.abclunwen.com)机溶剂NMP中实现了碘苯直接制备二苯醚的Ullmann反应，在H2O中实现了碘苯直接制备苯酚。

During preparation, mercapto ethanol isooctanoate, alkyl or ester tin chloride and organic solvent are first heated and refluxed while adding catalyst; organic layer is then obtained through separating liquid and decompression distilled; and through further steps, the compound is obtained. The synthesis process of the present invention is simple, and has conversion rate higher than 95 %, normal pressure and low reaction temperature, low power consumption and less pollution, and the prepared compound has high reaction activity and low toxicity.

制备时，将异辛酸巯基乙醇酯、烷基或酯基氯化锡和有机溶剂加热回流，同时加入催化剂，然后通过分液，保留有机层，再对有机层进行减压蒸等步骤制得所述化合物；本发明合成工艺简单，转化率大于95％，反应在常压条件下，反应温度低，从而降低了能耗，减少了污染，所制备的化合物具有反应活性高和毒性小的特点，使用安全。

OBJECTIVE To present a simple and reliable method for the reconstruction of metacarpophalangeal joint by the cartilage transplantation of metatarsophalangeal joint.

目的 利用自体跖趾关节软骨移植修复掌指关节缺损的软骨面，为掌指关节创伤性关节炎提供简便、可靠的方法。

In this thorough investigation of brand strength in the accelerated modern business world, Nigel Hollis draws on his experience at Millward Brown to present a simple formula for determining brand strength based on two axes, Presence and Voltage, to illustrate the market value and performance of brands.

在这个品牌的实力，在现代商业世界的加速进行彻底的调查，绘制奈杰尔霍利斯提出一个确定的品牌实力在两轴，存在为基础的简单公式，他在明略行的经验和电压，说明市场价值和品牌的表现。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。