双的

In this paper, through a series of experiments, two series of quaternary-ammounium Gemini surfactants were synthesized, namely the pair alkylene double quaternary ammonium salt surfactant m-s-m·2Br and the pair the alkylene double quaternary ammonium salt surfactant -s-·2Br. We has carried on the attribute with the infrared spectrum to its structure, and to affected the factor which the synthesis pair the alkylene double quaternary ammonium salt surfactant responded to carry on the discussion. We has discovered the synthesis pair the ethylene double quaternary ammonium salt surfactant m-2-m·2Br optimum condition: The bromo alkane and a tetramethyl ethylene diamine mole of ratio is 3.0: 1.0, makes the solvent by the ethyl alcohol, 80℃ under responds for 48 hours in the backflow temperature; Synthesis pair alkylene double quaternary ammonium salt surfactant 12-S-12 ·2Br optimum condition: 12 tertiary amine and 1, 3- propylene dibromide (1, 4- two bromines butane) a mole of ratio is 2.2: 1.0, makes the solvent by the ethyl alcohol, responds for 48 hours in the constant temperature 80 ℃ under backflow.

本文通过一系列的实验，合成了两个系列的Gemini型表面活性剂，即双烷撑双季铵盐表面活性剂m-s-m·2Br和双烷撑双季铵盐表面活性剂-s-·2Br，用红外光谱对其结构进行了表征，并且对影响合成双烷撑双季铵盐表面活性剂反应的因素进行了讨论，找出了合成双乙撑双季铵盐表面活性剂m-2-m·2Br的最佳条件：溴代烷与四甲基乙二胺的摩尔比为3.0：1.0，以乙醇作溶剂，在回流温度80℃下反应48小时；合成双烷撑双季铵盐表面活性剂12-s-12·2Br的最佳条件：十二叔胺与1，3-二溴丙烷(1，4-二溴丁烷)摩尔比为2.2：1.0，以乙醇作溶剂，在恒温80℃下回流反应48小时。

Origin, developmental changes and homologies of the stage morphostructures were considered according to their location in three morphogenetic fields. The first, or central, field forms at the prodissoconch I stage. It can be inherited by prodissoconch II and nepioconch stages in one taxa, or PD-II, N and dissoconch stages in others. The second, or postero-dorsal, field appears at the N stage, and the third field, or antero-dorsal, at the D stage.

主要对3个形态发生区域的阶段形态结构的起源、发育变化和同源性做了研究，其一，即中央区域，开始形成于前双壳I期，在某个分类单元它可以在前双壳II期和幼贝期形成，而在其它分类单元则在前双壳II期、幼贝期和双壳期形成；第二区域，即背部后区，在幼贝期出现；第三区域，即背部前区，出现于双壳期。

Our company specializing in the production of dual-cone, double-barrel, screw, double-, double-cone plastic extrusion machines, single screw extruder, plastic pipe production lines, plastic profile production lines, plastic sheeting, sheet production line, plastic extrusion To create materials and production lines dedicated to the production of environmental protection Plastic-wood extruder.

我公司专业生产锥双、平双机筒、螺杆，平双、锥双塑料挤出机、单螺杆挤出机、塑料管材生产线、塑料异型材生产线、塑料板、片材生产线、塑料挤出造料生产线及专用于生产环保塑木的挤出机。

This paper studies the effects of Jerusalem artichoke on the growth of Bifidobacterium in skim milk in order to provide theoritical foundation for the utilization of Jerusalem artichoke resource and development of bifidus yogurt, using Jerusalem artichoke powder as experimental material and B.

以菊芋粉为材料，以长双歧杆菌和两歧双歧杆菌为实验菌株，研究菊芋在脱脂乳中对双歧杆菌生长的影响，以期为进一步开发菊芋资源和研制双歧杆菌酸奶提供理论依据。

RESULTS. A total of 1224 twins (690 monozygotic and 534 dizygotic ) between 18 and 86 years of age were recruited into the GEM study. A total of 96 twins (96/347 = 27.7%) comprising 50 MZ and 46 DZ twins were first prescribed optical correction for myopia at the age of 18 years or older.

结果 18至86岁的1224对孪生子（单卵双生690对和双卵双生534对）参与了这项近视基因研究。96对孪生子（96/347 = 27.7%）包括50对单卵双生和46对双卵双生子在18岁以后第一次进行了近视视力矫正。

Bipolar II Disorder involves Major Depressive Episodes and Hypomanic Episodes. Since a significant portion of those suffering manic depression did not have full manic episodes, the classification was divided into Bipolar I and Bipolar II. However, Bipolar II is often a first step to Bipolar I. Over 5 years, between 5% and 15% of those will Bipolar II will change diagnosis to Bipolar I. Approximately 0.5% of people will develop Bipolar II in their lifetimes.

双极性二型包含重度忧郁症和轻躁症的症状由於有一大部份的躁郁症病人并没有完全的躁症症状，所以躁郁症要分为双极性一型和双极性二型然而，双极性二型常是双极性一型的第一步，经过五年，5% and 15%的双极性二型的病人会转变成双极性一型双极性二型的终生致病率大约为0.5

3D MDD patients showed significantly lower gray matter density than controls in right medial frontal gyrus, right temporal pole, bilateral putamen and globus pallidus, bilateral cerebellum. After treatment, gray matter density in right superior frontal gyrus, bilateral precentral gyrus, temporal pole, putamen and globus pallidus, and cerebellum in patients were still significantly lower than controls.

发作期抑郁症患者右侧额内侧回和同侧颞极、双侧壳核/苍白球和双侧小脑的灰质密度较正常人低；治疗后右侧额上回、双侧中央前回、双侧颞极、双侧壳核/苍白球和双侧小脑的灰质密度仍较正常人低。

To eliminate abnormity wear of tires in double-front-axle system of heavy truck, the kinematics and dynamics analysis method is set forth. On the base of the results for heavy double-front-axle truck load distributing and manipulate stability, tire uniformity load condition and deficiency steering characteristic condition of heavy double-front-axle truck are put forward. Steering trapezia space movement formula, double-swing-arm space movement formula and double-swing-arm movement formula in actual status of heavy double-front-axle truck are fetched. Optimization models of steering trapezia and double-swing-arm are founded and optimization arithmetics of transmission system in double-front-axle steering are compiled.

本文以消除重型汽车双前桥转向系统轮胎异常磨损等为目的，阐述了双前桥转向系统的运动学、动力学分析方法；在分析了双前桥重型汽车载荷分布和操纵稳定性的基础上，提出了双前桥重型汽车轮胎均载应该满足的条件、双前桥重型汽车具备不足转向特性应该满足的条件；推导了双前桥转向梯形空间运动关系式、双摇臂机构空间运动关系式和双前桥汽车实际工况下的运动关系式，建立了转向梯形和双摇臂机构优化设计模型，编制了双前桥转向传动系统优化算法。

Objective: Pino et al reported that strip lesions were produced when the distance between two probe was 2 to 6mm, and it resulted in unipolar lesions when they were spaced more than 6 mm apart. However, in clinical studies and some other reports, bipolar radiofrequency treatment was also effective when the distance was 10mm. Therefore, we duplicated Pino et al's experimente to study the lesion morphology when the distance of two radiofrequency cannulae was arranged between 2 and 10mm.

目的： Pino等人的研究发现双针间距在2-6mm之间时双电极之间可形成带状毁损，而8mm、10mm间距时双电极针成为独立的电极毁损，而在临床研究及某些文献报道中可以看到双电极间距在10mm时治疗同样有效，因此本文重复Pino等人的实验，研究双针电极间距在2-10mm时双针射频毁损形态。

Uh on me on me.. whatcha gonna do with all that junk all junk inside your trunk i'ma get get get get you drunk get you love drunk off my hump whatcha gonna do with all that ass all that ass inside your jeans i'ma make make make make you scream make you scream make you scream coz of my humps my hump my hump my hump my hump my hump my hump my lovely lady lumps check it out i met a girl down at the disco she said hey hey hey ya lets go i can be ya baby, you could be my honey lets spend time not money and mix your milk with my coco puff milky milky coco mix your milk with my coco puff milky milky riiiiight... they say i'm really sexy the boys they wanna sex me they always standin next to me always dancin next to me tryna feel my hump hump lookin at my lump lump you can look but you can't touch it if you touch it i'ma start some drama you don't want no drama no no drama no no no no drama so don't so don't you aint my man boy i'm just tryna dance boy and move my hump my hump my hump my hump my hump my hump my hump my hump my hump my hump my hump my lovely lady lumps my lovely lady lumps my lovely lady lumps in the back and in the front my loving got you..

你可以当我的甜心我们一起杀时间不是钱把你的牛奶跟我的可可混在一起奶味的可可你的牛奶跟我的可可混在一起牛奶牛奶是的他们说我很性感那些男孩麼都想干我他们永远都站在我身边永远都在我身边跳舞试著抚摸我的双峰双峰看著我的双峰双峰你可以看但你不能摸你如果摸了我就会开始生气你不想要我生气不不要我生气不不不不要我生气所以不要拉著我的手你不是我的男人我只是想要跳舞还有动我的双峰我的双峰我的双峰我的双峰我的双峰我的双峰我的双峰我的双峰我的双峰我的双峰我的双峰我可爱的女性双峰我可爱的女性双峰我可爱的女性双峰前面跟后面你被我的爱迷住它让我为他花钱喔~把你的钱都花在我身上。。。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。