成双成对的

The fatigue life followed the logarithmic normal distribution or the two-parameter Weibull distribution by the probability regression method.

为研究预腐蚀对疲劳寿命的影响，进行30CrMnS iN i2A和LC4CS试件加速预腐蚀不同时间后的成组随机谱下的疲劳试验，采用概率回归方法对预腐蚀疲劳寿命分布特性进行检验，表明可采用对数正态分布和双参数威布尔分布描述疲劳寿命分布特性。

Three pairs of elite cell lines from octoploid triticalespikes were selected for screening experiment of salt-tolerant somaclonal variants under different selection pressures.

从八倍体小黑麦的单、双倍体来自同一植株的成对愈伤组织细胞系中，选择了三对在盐分浓度不同的培养基上进行变异体筛选，并测定耐盐变异体的出现频率。

Three new ferrocenylmethyl-substituted indenes and cyclopentadienes were synthesized by the addition of hydrogen anion and carbon anion to fulvene and benzofulvene respectively, moreover, their structures were characterized by NMR and MS.

本文以二茂铁基富烯和二茂铁基苯并富烯为前体，通过负氢和负碳对双键的加成，合成了3个新型的二茂铁基甲基取代的茚及环戊二烯，并对其结构进行了核磁及质谱表征。

Three new ferrocenylmethyl-substituted indenes and cyclopentadienes were synthesized by the addition of hydrogen anion and carbon anion to fulvene and benzo fulvene respectively, moreover, their structures were characterized by NMR and MS.

本文以二茂铁基富烯和二茂铁基苯并富烯为前体，通过负氢和负碳对双键的加成，合成了3个新型的二茂铁基甲基取代的茚及环戊二烯，并对其结构进行了核磁及质谱表征。

"Tong_su_yi_xu synonymic words" is to say those two double-syllable composite words which have the same or the similar meaning (according to the meanings in "Modern Chinese Dictionary")and the same morphemes but different order.

&同素异序同义词&是指构词语素相同，语素位置互逆，词语的概念意义相同或者相近(主要依据《现代汉语词典》中对词语的释义)的成对出现的双音节合成词。

Objective To optimize parameters with double spiral computed tomographic angiography for visualization of portal veins.

目的评价双螺旋CT血管造影不同扫描层厚和螺距对门静脉成像质量的影响。

The accumulative affects of Chronic, psychic and unexhaustive stress are important contributing factors for many main diseases harming human healths.

应激方法：将大鼠成对、立式束缚双后肢于笼内，以引起明显的激怒反应，如粗叫、对峙、扭打和嘶咬等。

The company is located in Fuyong High and New Technological Industrial Park, in West Baoan District, Shenzhen, with the occupational area of over 30 mu(1mu=667m2), workshop area of 35000m2, possesses national advanced producing equipments3 sets of imported double screw charging machine, 20 sets of big and small automatic annealing drawing bench equipment, 8 sets of automatic laser testing exterior produce lines, 12 sets of 800 630 500 type twinning cablers, 50 sets of US type fully-automatic high speed knitting machine and a series of auxiliary machines.

公司坐落于深圳市宝安区西部高新技术产业园，占地面积三十多亩，厂房面积三万五千平方米。拥有国内最先进的生产设备，主要有进口双螺杆造料机三套；大小全自动退火拉丝机设备二十套；全自动激光检测外径生产线八套；800 630 500型对绞成缆机一十二套；美式全自动高速编织机五十台及一批辅助机器。

Yesterday afternoon, when her quiet again to head shape appeared at the scene and immediately brought us to this stage of unlimited memory, with only five months ago is not the same, and the quiet appearance together four leading Duyulu, Hou Yong, Liu Wei and Zhao Jun are getting to be the story of a head shaving needs five individuals stand together Lee immediately in their nose into a flash :: For this stage of the quiet without a dress, a black water mink fur shawls, two quite minority characteristics huge earrings, a loss of 10 cm high pine cake sandals, coupled with the incomparable brilliant smile, the character models look at the mood is exceptionally good.

昨天下午，当女主角宁静再度以光头造型出现在现场，立刻勾起大家对这部戏的无限回忆，只是同5个月前不一样的是，和宁静一同亮相的四位男主角杜雨露、侯勇、刘威和赵君也都通通应剧情的需要剃成了光头，五个人站在一起，镁光灯立刻在他们的头顶闪成一片……为了这次的亮相宁静着实打扮了一番，一件黑色的水貂皮披肩，两只颇具少数民族特色的硕大耳环，一双足有十厘米高的松糕凉鞋，再加上无比灿烂的笑容，这位性格女星看心情是格外不错。

Single component and multi\|component of iron system colloidal catalyst \Ali\|Bu\-3CH\-2CHCH\-2Cl\ were mixed by different ratios in hydrogenated gasoline medium at 25℃.This paper studied the relationship between the nonaqueous systematic electroconductivity and the concentration of catalyst components.In combination with Tyndall effect,polymerization experimental results,Ali\|Bu\-3 existed in associated state and dissociated into ionpair.The reaction between Ali\|Bu\-3 and Fenaph\-2 was the main reaction which formed colloidal core.Ali\|Bu\-3 reacted on CH\-2CHCH\-2Cl and Ali\|Bu\-2Cl was yielded which joined the formation of active center on the surface of colloidal core.The excessive Ali\|Bu\-3 was dissociated into ionpair which formed double electrode layer,and the double electrode layer kept the colloidal particles relatively stable.

研究了在25℃加氢汽油介质中，铁系胶体催化剂［Fenaph2Ali-Bu3―CH2==CHCH2Cl］单组分、多组分按不同配比混合，非水体系电导率与浓度的关系，结合Tyndall效应，聚合实验结果，得出Ali-Bu3以缔合状态存在并解离成离子对它同环烷酸亚铁的作用是形成胶核的主要反应，与氯丙烯反应生成的氯化异丁基铝，在胶核表面参与形成活性中心由过量Ali-Bu3解离的离子对形成的双电层结构，使胶粒保持相对稳定。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。