二-十进制

It appears as a single-shelled icosahedron with 112 characteristic two-layer spikes.

该病毒仅有单层衣壳，病毒离子呈二十面体对称，二十面体的十二个顶点均有双层突起。

Paul explains in Romans 1:24, 26, 28, that God reveals His wrath by turning impenitent men over to the inevitable results of their rebellion.

保罗在罗马书一章二十四、二十六和二十八节解释说，上帝任凭邪恶的人承受他们犯罪的结果，这就是上帝的愤怒了。

The synthesis and characterization of 3,3'trimethylenedi indene and divalent rareearth 3,3'-trimethylenediindenyl complexes

3，3＇－三亚甲基二茚和二价稀土3，3＇—三亚甲基二茚基配合物的合成与表征

Second, plasticizers industry trends: the main production of plasticizer tends to continuous large-scale production, and special plasticizers tend to many varieties, small batch intermittent production; products, traditional, low-cost, security risk phthalate plasticizers are being new, safe but relatively high prices of citric acid ester plasticizers, trimellitic acid plasticizer replaced this trend performance in foreign markets significantly, and domestic prices because of factors, phthalate plasticizers will be substantial use.

二、增塑剂行业发展趋势：生产方面主增塑剂趋于连续化大生产，而特殊增塑剂趋于多品种、小批量间歇生产；产品方面，传统的、廉价的、安全风险大的邻苯二甲酸酯类增塑剂正在被新型的、安全的但价格相对较高的柠檬酸酯增塑剂、偏苯三酸类增塑剂所取代，这一趋势在国外市场表现显著，而国内由于价格因素，邻苯二甲酸酯类增塑剂仍将被大量使用。

In chapter three, we first give the definition of quadratic automata (3. 6 definition), then study their invertibility. 3. 10 theorem gives a sufficient and necessary conditions for weak inverse quadratic form finite automata, and a way to find the one whose weak inverse is quadratic form finite automata.

第三章首先构造了二次型有限自动机类（3.6定义），研究其上的可逆性理论。3.10定理给出了弱逆二次型有限自动机的充要条件及弱原逆的求法、3.12定理则给出了弱可逆二次型有限自动机的充要条件及弱逆的求法。

Then we found bijections between quadratic form finite automata and input memory linear automata which lead to a way to produce all weakly invertible or weak inverse quadratic form finite automata. In the last section of chapter three, we extend these results to a more general class of nonlinear finite automata (called qusi-quadratic form finite automata).

然后我们建立了建立全体二次型有限自动机与全体输入存储线性有限自动机之间的的一个一一对应L，由于L保持弱逆性（3.20定理），由此我们得到了产生全体可逆二次型有限自动机的方法：要产生一个具有某种可逆性的二次型有限自动机只需产生一个具有同种可逆性的输入存储线性有限自动机，然后作其二次型提升即可。

UV and HPLC were used for the first time to study the photo-cis-trans isomerism in dilute DNS solution.

首次采用紫外光谱和高压液相色谱初步研究了4，4'-二硝基二苯乙烯-2，2'-二磺酸稀溶液中的光致顺反异构现象。

In this paper,microbial production of 2,3-BD was performed by Klebsiella pneumoniae using glucose or Jerusalem artichoke tubers as carbon source.Additionally,a novel aqueous two-phase system for the recovery of 2,3-BD from fermentation broth was developed employing short chain alcohol/inorganic salt.

针对这些问题，本论文研究了生物转化法生产2，3-丁二醇的工艺，并采用新型双水相体系对发酵液中的2，3-丁二醇进行分离萃取，最后考察了利用廉价的非粮原料菊芋作为底物发酵2，3-丁二醇的可行性。

Both the protection and deprotective group methods for the amino-group on side chain of a new N-pivot lariat crown ether were studied comparatively.

研究了一种新的氮支套素冠醚侧链上氨基的保护和脱保护基方法，结果表明，由过量乙二胺与对甲苯磺酰氯反应得到的单保护乙二胺（N－对甲苯磺酰基乙二胺4a），经N－烷基化环化反应，然后在氢化铝锂存在下脱除保护基，即可制得最佳产率的N－（2－氨基已基）单氮杂－12－冠－4（1）。

There were three major findings.(1) On the basis of the assessment of overall model fit and parameter estimates, the hypothesized second-order confirmatory factor analysis model represented an adequate fit to the sample data.(2) According to the cross-validation analysis, the second-order factorial validity of this scale was very stable.(3) This hypothesized model was invariance across these five important demographical variables, including school, gender, grade, right/left-handedness, and past experience in unintentional injury, via the testing of invariance in the multiple groups.

结果有三项主要的发现：第一、经整体暨个别的残差分析、整体模式之适配与其取代指标，以及估计参数之统计考验等结果，均指出假设此量表为二阶因素分析测量模式是相当恰当的；第二、经交互确认效度分析结果，显示此量表之二阶潜在因素结构是非常稳定；第三、经多组别不变量统计考验结果，指出此量表之二阶潜在因素结构，对於学校别、性别、年级、用手习惯，以及过去伤害经验这些社会人口变项，大致上具有因素个数、因素负荷量、因素变异数，以及测量误差变异数等不变量的特性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。