螺体

Experimental process: jing and 3- methyl -2- methyl ethyl ketonesynthesizes by the benzene zong; Again the glacial acetic acidcatalysis produces 2, 3, 3 - trimethyl - 3H - yinduo; Again has thealkylate response production yinduo iodide after the methyl iodide;The iodide takes off molecular HI under NaOH to become freejier thealkali; Adds 5 - nitryls salicylic aldehydes in the ethyl alcohol forthe solvent under if to respond finally produces 6 '- the nitryl yinduolin spiral benzene and pinan; Through the infrared spectrum andthe ultimate analysis irrevocably proved its structure, and studiedthe annulus with to open the annulus the light to send changes colorthe performance, explained in different solvent medium ultravioletabsorption spectrometry solvent effect, and the comparisondiscoloration the response speed number difference, finally mixed itadds to the methyl methacrylate, the peroxidation benzoin formyl in the plexiglass, tested 6 '- the nitryl yinduolin spiralbenzene and pinan in the glass fatigue resistance, thethermostability.

实验过程：由苯肼和3-甲基-2-丁酮合成腙；再冰醋酸催化生成2 ，3 ，3—三甲基—3H—吲哚；再经过碘甲烷发生烷基化反应生成吲哚碘化物；碘化物在NaOH下脱去一分子HI成为费歇尔碱；在乙醇为溶剂下加5－硝基水杨醛与其反应最后生成6'—硝基吲哚啉螺苯并吡喃；通过红外光谱和元素分析确证其结构，并研究了环体与开环体的光致变色性能，解释了在不同溶剂介质中紫外吸收光谱的溶剂效应，并比较褪色反应速率数的差异，最后将其掺加到甲基丙烯酸甲酯，过氧化二苯甲酰有机玻璃中，测试6'—硝基吲哚啉螺苯并吡喃在玻璃中的抗疲劳性、热稳定性。

Along extrusion direction, the isobar in groove becomes to perpendicular to mandrel axis from perpendicular to groove, while the isobar in annulus clearance becomes to perpendicular to mandrel axis from inclining to mandrel axis.

沿挤出方向，螺槽中熔体的压力等值线由垂直于螺槽逐渐变为垂直于轴向，环形间隙中熔体的压力等值线由倾斜于轴向逐渐变为垂直于轴向。

Little difference between male and female appearance Lo, David Lo stage it is difficult to identify, as Lo is the difference between the most obvious: the same rearing conditions, the same age in the general female screw than that of the male body; female snails recessed central operculum, the operculum and hung Lo Centralaround.

雌雄螺外观差异不大，幼螺阶段难以鉴别，成螺最明显的区别是：相同饲养条件下，同龄螺中一般雌体比雄体大；雌螺的厣中央凹进，而雄螺的厣中央外凸，四周微凹。

Cercarial emergence from snails was significantly seasonal, a minimum temperature of 20℃ in the Bay must be exceeded to activate emergence.

从螺体排出的尾蚴具有明显季节性，在此海湾必须要超过最低温度20℃。

The length of pili-like structures varied significantly and the longest was 1860.5 nm. For the fiat time, the morphological polymorphy of spiroplasmas isolated from honeybee on all growth stages wee studied, and the phenomenon of conjugating like between two microbes in vitro was existed.

本研究首次描述了不同生长期蜜蜂螺原体的形态变化，发现螺原体纤毛状结构最长可达1860.5nm，并首次在人工培养基中发现螺原体具有类似纤毛接合现象。

A few spiro ligands have been successfully synthesized and applied in asymmetric catalysis .

手性螺环配体的合成及其在不对称催化反应中的应用是不对称合成和催化研究中重要的研究领域之一，一些手性螺环配体被合成出来并成功地应用于不对称催化反应中。

These organisms penetrate into snails, multiply, and develop into cercariae, the infective form for man

这些毛蚴进体螺体，繁殖和发育对人类有传染性的尾蚴。

These organisms penetrate into snail s, multiply, and develop into cercariae, the infective form for man

这些毛蚴进体螺体，繁殖和发育对人类有传染性的尾蚴。

Methods The spiroplasma morphology was examined by dark-field microscope and transmission electron microscopy. The biological characteristics of the spiroplasmas were investigated by using conventional culture-dependent method and phylogenetic analysis based on 16S rRNA gene and ITS (16~23S rDNA intergenic space) sequence comparisons.

常规螺原体分离、培养方法，应用暗视野显微镜和透射电子显微镜观察螺原体形态，根据16S rDNA和ITS序列构建系统发育树研究螺原体分离菌株可能的分类地位。

Polymer processing is a high-energy process operation, and screw machinery is widespread applied to the polymer processing, such as screw extruders, screw injection molding machine and so on. The screw plasticating and conveying equipments based on shear rheology are generally adopted in polymer processing, in which materiels are dominated by shear stress. Therefore, there are some ubiquity disadvantages of the current methods of polymer materials processing, such as long thermo-mechanical, high energy consumption, too big equipment structure, and dependence on material properties.

加热管高分子材料成型加工是高能耗过程作业，目前普遍采用螺杆机械，如螺杆挤出机、螺杆注射机等，在螺杆机械中物料塑化输运主要是靠螺杆旋转时对物料的拖曳作用，固体输送为摩擦拖曳，熔体输送为粘性拖曳，物料的速度梯度与其流动和变形方向垂直，这种流动与变形受剪切应力支配，所以当前的高分子材料加工方法普遍存在物料塑化输运所经历的热机械历程长、能耗高、设备结构大、对物料特性依赖性强等缺陷。

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。