成分

Prepositional logic: also known as prepositional calculus or sentential calculus, is the study of the truth conditions for propositions: how the truth of a composite proposition is determined by the truth value of its constituent propositions and the connections between them.

命题逻辑：也叫命题演算或句子演算，研究命题的真值条件：复合命题真值是如何由成分命题真值及成分命题之间的关系决定的。

Prepositional logic 命题逻辑:---- also known as prepositional calculus or sentential calculus,is the study of the truth conditions for propositions:how the truth of a composite propositions and the connection between them.

也叫命题演算或句子演算，研究命题的真值条件复合命题真值是如何由成分命题真值及成分命题之间的关系决定的。

Results show that the antibacterial component belongs to volatile oil、sesquiterpene、phenols and organic acids. The antibacterial part of the broth was isolated by silica gel column and 6 fractions of obviously antibacterial activity were obtained .By further study Fractions 1、2、3 contain sesquiterpene and fractions 8、9 contain phenols and fraction 10 contains phenolic organic acid.

对发酵液抑菌成分的研究表明，抑菌活性成分组成为挥发油倍半萜、酚和有机酸等类化合物，采用硅胶柱层析对发酵液抑菌活性部位进行分离实验，得到了6个具有明显抑菌活性的粗组分（组分1、2、3、8、9、10），其中组分1、2、3含有倍半萜类物质，组分8、9含有酚类物质，组分10中有含酚羟基的羧酸类物质。

It was indicated by the CALPHAD that the solute content at the end point of primary solidification changes synchronistically with the start point, solute content in dendritic arm and the partition coefficient increase with the solid fraction. Simple Scheil equation was shown to be able to calculate the eutectic amount on the base of partition coefficient calculated by thermodynamics, its prediction for the different solutes is self--consistent and agreeable with the CALPHAD. The eutectic amount and SDAS was measured in DC experiment and compared to model value, it was shown that the experimental data are in agreement with the model prediction.

相图计算耦合Scheil模型的计算结果显示， Al--Cu--Zn合金单相凝固结束点的溶质含量与凝固初始点的成分同步变化，溶质含量和溶质分凝系数随凝固过程的进行不断增加；在热力学计算出合金分凝系数的基础上，简单Scheil方程可以计算初生相含量，从不同溶质得到的计算结果是自洽的，并与相图计算耦合Scheil模型的预测值一致；实验测定了不同成分铝合金的共晶含量和枝晶间距，实验数据与模型结果基本一致。

It is found that generally the hydrologic noises exhibit skew characteristics, so that it is reasonably to use skew probability distribution to describing the noise components, and the wavelet coefficient threshold obtained by optimal entropy criterion based on information entropy theory in the global optimum.

分析结果显示，水文序列中的噪声成分具有偏态特性，因此本文应用偏态分布线型对噪声成分进行描述更为合理，而且小波系数阈值优选熵准则所得的阈值是基于信息熵理论而确定的，因此是整体上最优值。

We can obtain the specular reflection component by separating the reflection components, and more determine the surface normal of the object and recover surface shape of the moving objects.

通过对反射光中两成分的分离得到镜面反射成分，可进一步判断光源的方向、颜色，并取得物体表面法线方向，为自动物体建模提供依据。

We explored the single-trial estimation of P300 from channel Pz using support vector machine in three subjects, and gained a satisfied classification accuracy, which is 91.3%, 88.9% and 91.5% respectively. These results demonstrated the advantages of the inducing paradigm in constructing our mental speller.

本文利用支持向量机分类器对三名被试的脑电信号的载波成分进行了单次提取，特征数据来自通道Pz，以300ms~600ms时段的P300成分作为特征信号，对靶刺激的正确识别率分别为91.3%、88.9%和91.5%，证明了诱发模式的先进性，为系统的实现打下了基础。

The orthogonal design of fifteen factors and two levels is made. At the same time, fifteen components are tested and five key factors have been selected out .Finally the second orthogonal design of five factors and four levels is carried on and the new optimum component of artificial diet of rice stem borer is reached.

同时，本文从已报道的不同二化螟人工饲料中选择了15种饲料成分，采用15因子2水平的正交试验设计，对这15种成分进行了优化，并从中筛选出5个关键因子，然后对这5个关键因子进行了5因子4水平的第二次正交试验优化设计，得出了二化螟人工饲料新的优化配方。

And according to Krashen's (1980) Input Hypothesis, different learners at different levels should be given different suitable input. So the present thesis studies what kind of listening input is comprehensible for the intermediate college students and hypothesizes that the memory for random digits is subcomponent of primary memory, and that the memory for random words and for phrases are the subcomponents of speech-processing memory; these components rank in order of phrases contributing the most to an explanation of the variance in listening scores, random words the second and the random digits the least.

因此本论文旨在研究什么样的听力输入适合中级水平中国大学英语学习者，并且假设对随机数字的记忆是基础记忆的成分；而对单词的记忆和对词组的记忆是语言处理记忆的组成部分，并且以上各成分对听力理解的影响依次是对词组的记忆影响最大，对单词的记忆位于第二位，对数字的记忆位于最后。

The abundant nutrient ingredients from sweet almond oil and sundrops oil give vitality to weary skin and control the balance between moisture and oil in skin to make vital skin tone.

芳香的杏仁油和月见草油等丰富的营养成分，调节疲劳的皮肤活力与皮肤的油、水成分平衡，实现充满活力的皮肤的美白功能性乳液。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。