多元的

The polyesterification reaction of DFA and EG was regarded as research object.The polyesterification reaction process of polyacid and polyalcohol was studied andimproved, and condition of synthesis reaction was determined.

3以二聚脂肪酸与乙二醇酯化反应为研究对象，研究和改进了多元酸和多元醇缩聚反应的工艺，确定了二聚脂肪酸-乙二醇聚酯合成的工艺条件。

Sorbitol is the main polyalcohol synthesized in the leaves of apple trees and converted into sugars in the fruit.

山梨醇在苹果树的叶子里是主要的多元醇，进而在果实中转化为糖。

A kind of polyalcohol compound extracted from Periplaneta American, had been proved to have heal-promoting effect on a variety of wounds. Whether it takes heal-promoting effect on the radiation- impaired skin wound, it is not yet studied.

以往文献报道：从美洲大蠊体内提取的一种多元醇类化合物〓对多类创伤具有促进作用，但对合并放射损伤的创伤是否有促愈作用，尚未进行研究。

The effect of additives combined polyalcohol anion surface active agent with alkali activator or high efficiency sulfonate water-reducing agent on physic-chemical performance of slag powder and slag-cement system pastes have been studied.

选择多元醇类阴离子表面活性剂分别与碱性激发剂和高效磺酸盐减水剂进行复合，研究了复合添加剂对矿渣粉体和矿渣-水泥浆体的物理化学性质的影响。

The method adopts powders (10.0 parts of mass) of crop straws and phenols or polyalcohol compound (10 to 100 parts of mass) which is firstly pre-heated by 10 to 30 minutes under a temperature of 30 to 200 DEG C with the effect of acid catalyst (0.5 to 10 parts of mass) for a reaction of 30 to 240 minutes; after the reaction, the compound is washed, neutralized, filtered and dried to obtain a solid appearing as a color from citron yellow, yellow, bight brown to seal brown; wherein, the solid includes 64.0 to 70,0 percent of fibrin and 4.1 to 7.6 percent of lignin.

秸秆"液化"预处理制备生产燃料乙醇原料的方法，是用农作物秸秆的粉末(10.0质量份)和酚类或多元醇类化合物(10～100质量份)，在酸性催化剂(0.5～10质量份)存在下，在30～200℃温度下预热10～30min后，反应30～240min，反应完毕进行洗涤、中和、过滤和干燥而得呈淡黄色-黄色-浅褐色至深褐色固体，其中，纤维素含量64.0～70.0％，木质素含量4.1～7.6％。

Convinced that strengthening diversity is a business imperative, Du Pont has established several programs to achieve that goal.

杜邦公司把促进多元文化作为企业管理的当务之急并制定了几个相应的计划。

In this dissertation, the fundamental theory of principal component analysis have been deeply analyzed.

基于多元统计过程控制的故障诊断方法，是故障诊断领域研究的一个重要分支。

Traditional multivariable analysis method mainly includes Principal component analysis method , Factor analysis method that we usually talk of .

传统的多变量统计分析方法，主要是指主成分分析方法、因子分析方法等我们常说的多元统计分析方法。

The statistical method of Procrustes analysis was introduced to solve the problen of calibration transfer from near infrared spectrometers.

使用普鲁克分析（Procrustes analysis ，PA）统计学方法解决多元校正中的模型传递问题，并研究了 PA算法中主因子数及标样数对传递结果的影响。

Then using the Zhengding quadratic form theory, had proven a function of many variables condition extreme value's sufficient condition, and has given its application example.

而后利用正定二次型理论，证明了多元函数条件极值的一个充分条件，并给出了其应用的例子。

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。