两个一套

Firstly, there could be an error in the apices formed by each two sets of helices of opposite hand, commonly referred to as apex wander or run-out.

第一，有可能是一个错误的形成两个。每根尖套一圈的侧手，一般简称先端游荡或者精疲力尽。

In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.

为了发展一套实用的合成方法，我们首先制备於苯环上具有不同种取代基的苯乙醯胺，接著透过Bischler-Napieralski反应进行分子内合环，并利用钌金属对亚胺中间体进行不对称的还原反应，建立出产物中唯一的光学活性中心，最后再利用Heck反应连结两个苯环，就可以顺利得到具有光学选择性的阿朴吩类天然物。

Preparation of the cathode includes:shaping under the press of 40Mpa, sintering at 550℃for 1 hour and at 900℃for 8 hours and threading with molybdenum bar; Considering the literatures we choose CaCl2 as salt for preparation titanium. Pretreatment of salt is for 1 hour at 100℃and for 2 hours at 300℃. Partial pressure of oxygen which need lower than 5.11×10-7Pa to reduct titanium oxides and hygroscopic property of salt need a sealed equipment to electrolyse. And finally successfully designed a satisfied one and the results show that the equipment can be satisfied the requirment of the experiment. Flow of the inert gas is 1.5L/min, the voltage is 2.8 V, temperature is 850℃and time is 2 hours during pre-electrolysis. Flow of the inert gas is 0.2L/min, the voltage is 3.1 V, temperature is 900℃and time changes with the mass of TiO2 during electrolysis, namely the greater need the longer time; To eliminate influence of salt and other impurities, the products need to wash with distilled water and dilute chlorhydric acid , then wash with dilute hydrochloric acid under supersonic wave assistant. Finally, electrometical properties of the electrolysis of TiO2 is researched by cyclic voltammetry and chronoamperometry, and results show that there are two main reodox steps, namely from TiO2 to TiO and from TiO to Ti.

阴极制备主要包括40MPa压力下模压成型、两段式烧结(1小时内升至550℃保温1小时，再1小时升温至900℃保温8小时)及烧结后TiO2块打孔用钼棒串接三个主要环节；实验中选用CaCl2作为电解熔盐，并对其进行预处理(100℃，保温1小时； 300℃，保温2小时)；经热力学计算，还原钛氧化物的氧分压至少要低于5.11×10-7Pa，结合电解过程中所用熔盐CaCl2有极强的吸水性的特点，电解装置应有较高的密封性，自行设计了一套密封性可靠的电解装置，便于实验过程中熔盐预处理和氧分压的控制；通过干燥处理预电解过程中Ar流量大约为1.5L/min、电压为2.8 V、温度为850℃、时间为2小时，电解过程中Ar流量大约为0.2L/min、电压为3.1V、温度为900℃，实验结果表明电解时间与TiO2质量密切相关，质量越大需要电解的时间越长；通过自来水冲洗—稀盐酸浸泡、洗涤—在超声波辅助作用下稀盐酸洗涤，可减少熔盐及其它杂质对电解产物检测结果的影响；最后，通过循环伏安法、计时电流法对电解机理的研究，确定电解还原TiO2制备金属钛主要经历了TiO2-TiO-Ti的过程。

Because the audience proportion is small after the fractionization, thus the channel must have reasonable coverage to exert its influence fully, to have more advertisement income, to ensure better program quality, and achieve benign cycle.

一套电视节目的效益，不论社会效益还是经济效益，取决于两个因素：覆盖面积与收视率，细分后的观众比例小了，必须有一个相当可观的频道覆盖面才能让节目充分发挥影响，才能有较高的广告收入，才能实现保证像样的节目质量，有一个良性循环。

Especially when China has joined into the WTO, domestic market internationalization rapidly, foreign product and capital inburst into China largely, how to do a better job in attracting foreign capital, how to enhance the guide and control of foreign capital, and improve the development level of utilizing of foreign capital become an important task.Under the new situation of economic globalization and China's entry into WTO, the new policy of revitalization of northeast which is the China's old industrial base brings a new developmental opportunitie

在此基础上，结合吉林省利用外资发展水平的现状建立了一套完整的综合评价指标体系，利用主成分分析法从纵向和横向两个角度对吉林省利用外资发展水平进行了一个综合的评价，针对评价结果进行了详细的分析论述，找出了吉林省利用外资中的不足，并提出了相应的改善对策和建议。

Based in the hudson valley where she lives with her two daughters, carol recently bought and renovated a gorgeous abandoned farmhouse in les monts du lyonnais, france.

卡罗儿和她的两个女儿住在哈德森山谷，她最近买下并装修了一套位于法国les monts du lyonnais的废弃豪华农舍。

Writeable snapshots can also be created, resulting in two independent file systems that share a set of blocks.

写快照还可以创建，导致两个独立的文件系统共享一套块。

The genetic behavior of these QTLs were investigated accordingto the performance of backcrosses.

5对以IR24为遗传背景的一套籼型渗入系进行了三地两年的详细考察，初步确认了各渗入系中所携带的渗入片段对抽穗期、株高、穗数、实粒数、总粒数、千粒重、单株重和结实率等性状的影响，并初步定位了11个重要农艺性状和产量性状QTLs，估算了这些QTLs的遗传效应，并在回交和测交中进一步确定了这些QTLs的遗传行为，讨论了渗入系在QTL精细定位与杂种优势机理研究中的应用。

For example, perhaps an application will have two owner windows, each with its own set of docked windows.

例如，也许一个应用程序将有两个所有者窗口，按照其自己的一套停靠窗口每个。

Why, he didn't only look like he was dead, he looked considerable more than that.

这两个流氓又想演出《王室异兽》那一套，因为这能捞到大钱。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。