二倍

Gas chromatography was employed to quantify the output of metabolization,and it was found that the yield of diacetyl for the mutant UV-3 was 18.7 fold to the wild-type 10293,up to 1.045g·L~(-1).Acetoin and ethanol yields were decreased by 48.4%and 71.4%,respectively.The yield of acetate was increased by 34.6%.

利用气相色谱测定代谢产物量，分析诱变前后菌株代谢途径中碳源的流向，结果表明突变株UV-3的丁二酮产量提高18.7倍，达到1.045g/L，乙偶姻产量降低48.4%，乙醇产量降低71.4%，乙酸产量提高34.6%，且遗传性质稳定。

The same result can also be achieved when optimizing F8 function (Rastrigin's function). Comparing to EGA, KEGA is easy to realize and the increase of computation load can be neglected, but the performance of KEGA can be improved greatly. 2. To enhance the speed of AIA, two new methods of computing the concentration of antibody were developed. Simulation results for F8 and F15 (needle in haystack: type I) functions show that the two methods can improve the running speed of AIA more than 8. 5 times. 3. As to the drawback in defining antibody concentration, a new definition based on Euclidean distance between two antibodies and fitness is proposed. On this basis, a new AIA was constructed. The convergence performance are more better than that of AIA. 4. Combining king crossover with AAIA and DBAIA, two new AIAs, KAAIA and DKBAIA, were proposed.

仿真实验结果表明KEGA实现简单，与EGA相比，其增加的计算开销可以忽略，但性能改善十分明显； 2、针对基于信息熵的免疫算法运行速度慢的缺点，提出了二种能够加快AIA运行速度的新的抗体浓度计算方法，得到两种新的免疫算法，即加速的人工免疫算法(Accelerated Artificial Immune Algorithm，AAIA)和加速的人工免疫算法-2（Accelerated Artificial Immune Algorithm-2，AAIA-2），对测试函数F15(needle in haystack：type I)、F8函数的仿真研究表明，这两种算法的运行速度都是AIA的8.5倍以上； 3、针对AIA的浓度定义存在的缺陷，提出了一种新的基于抗体间欧氏距离和适应度的新的抗体浓度定义，并依据该定义构造了一种基于欧氏距离的人工免疫算法(Euclidean Distance-based Artificial Immune Algorithm，DBAIA)。

Stamens usually twice as many as petals and in 2 whorls, rarely as many as petals by loss of 1 whorl, isomorphic or dimorphic; filaments distinct, often geniculate, inflexed in bud; anthers typically 2-celled, introrse, basifixed, dehiscent by 1 or 2 apical pores or by short longitudinal slits; connective often variously appendaged.

雄蕊通常是花瓣数量的两倍并且2轮，有时1轮而与花瓣同数，同形或二形；花丝离生，通常膝曲，在芽期内折；花药通常2室，向内，基着，通过1-2顶孔或短纵裂裂缝开裂（Astronia ，Memecylon；药隔通常有不同的附属物。

Also Cassian,"Coll,", IX, XV there may be observed traces of the threefold degree which was afterwards systematically developed by Dionysius the Areopagite.

在该著作的克莱门特亚历山大和格里高利大（下称&道德&，三十三，长二十七；比照也cassian ，& coll &，第九，十五），有可能观察到的痕迹了三倍程度是事后系统开发狄奥尼修斯的

I am suppose to be a Sophomore College student but I did stop schooling twice, that's why I am presently still I am a Senior High School student here in our Barangay.

我猜想是一个二年级的大学生，但我没有停止上学的两倍，这就是为什么目前仍然是我高中的学生在这里我们barangay 。

However, aback in December a letter to shareholders appropriate fourth division losses there would bifold from the antecedent three months to $1.2 billion.

不过，去年十二月份，该公司的股东都收到一封信，里面提到第四季度的亏损额将会是第三季度亏损额的两倍，高达十二亿美元。

The activitys of Super Oxide Dismutase, peroxidase and Multiple Displacement Amplification of Ceratophyllum demersum L raised rapidly in the late of experiment, and the maximum value of MDA of Ceratophyllum demersum L in the eutrophic condition was 5 time higher than that in the medium nutritional condition, implied that Ceratophyllum demersum L has been stressed in the middle nutritional condition.

金鱼藻超氧歧化酶活性、过氧化物酶活性和丙二醛含量在试验后期上升速度加快，且富营养水平下金鱼藻MDA质量分数的最大值是中营养水平下最大值的5倍，表明在中营养水平下金鱼藻已经受到明显胁迫，而在富营养水平下受到胁迫更为显著。

In the long-period toxicity test, DCG was administered repeatedly for 60 days, the dose were 72.6,36.3,18.2 g/kg respectively(It refered to the dose of material,which amounted to 52.6,26.3,13.2 times of 50 kg human clinic use). There is no other abnormal changes about color patem,action,urine and stool,but cibation, hydroposia, body weight and index part of hematological and hematobiochemical parameters,coefficient and histomorphological figure of organs were examined during administration phase.The rats were examined in 21 days after the cessation of DCG, the abnormal changes of index was completely recovered.

定喘颗粒大鼠给药60 d的毒性试验，剂量分别为72.6，36.3，18.2 g/kg（相当于临床50 kg人用量的52.6，26.3和13.2倍），给药期间各组大鼠毛色、活动、二便均无异常变化，但给药组大鼠摄食、饮水、体重以及部分血液学、血液生化学指标和脏器系数有异常变化，停药后，上述异常变化指标均已恢复正常。

Mono-cinnamyl maleate was prepared by esterification of maleic anhydride and cinnamyl alcohol of 1 mol:2 mol at 95 ℃ for 2～4 h.Then added isomeric catalyst and mono-cinnamyl fumarate was made by reacting at 90 ℃ for 4 h.After methanol (methanol:mono-cinnamyl fumarate = 6 mol:1 mol) was added,the mixture maintained at 90 ℃ for 4.0 h to synthesize CMF.

合成试验表明：以摩尔比为1：2的马来酸酐与肉桂醇在95 ℃醇解反应2～4 h后加入异构化催化剂，90 ℃转型反应4 h后，添加6倍摩尔质量的甲醇，在90 ℃恒温反应4 h，反丁烯二酸桂醇甲酯的合成产率较高。

Methods Two sesquiterpenoids were isolated from the resinous exudates of Commiphora opobalsamum.

方法没药石油醚提取部分经硅胶柱层析分离得到二十多个倍半萜类化合物。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。