查询词典 PECH

PECH based PUs showed higher phase separation than that of PPG base PUs owing to that the -Cl groups in PECH reduced the flexibility of molecule chain and hindered the formation of hydrogen bonds between ether groups in soft segments and -NH groups in hard segments. As a result, PECH based PUs have lower free volume content, diffusion coefficient and equilibrium adsorption of CO〓, benzene and ethanol through them than through PPG based PUs.

聚环氧氯丙烷醚聚氨酯的氯基降低了链段柔性，妨碍了软段中醚基与硬段中氨基的氢键作用，导致其相分离程度较聚环氧丙烷醚聚氨酯大，并使CO〓、苯和乙醇蒸汽在聚环氧氯丙烷醚聚氨酯中的渗透系数和扩散系数较聚环氧丙烷醚聚氨酯小，而偏离费克扩散的程度大。

The high turbidity problem in water out of the cyclofloc always exist in Pech?-David water treatment plant at Toulouse in France. Compared with the other water treatment plant at Toulouse, the turbidity of Pech-David was 2.3NTU and was higher than that of Clairfont as 0.5NTU. Coagulation jar-tests with several coagulants and coagulation aids from Floerger and Ciba company were studied to solve this problem.

法国图卢兹市的Pech-David自来水厂所用处理工艺中的cyclofloc沉淀池出水浊度过高（2.3NTU，该市另一个水厂平流沉淀池的出水浊度0.5NTU），为了寻找试剂来改善该浊度问题，结合来自Floerger以及Ciba公司的混凝剂与助凝剂，进行混凝实验。

Results show that the functionality of PECH varies as types of initiators.

实验结果表明，PECH的官能度随引发剂的种类而变。

The increase of catalyst dosage and the rise of reaction temperature result in higher M of PECH.

而增加催化剂用量及提高反应温度，则可增大PECH的相对分子质量。

The hydroxy value of hydroxy-terminated polyepichlorohydrin is a very important index which influences many properties of PECH.

端羟基聚环氧氯丙烷的羟值是影响其性质的重要指标。

Elastic Modulus of Wollastonite filled PECH composites have been measured under different test temperature and tensile rate.

研究了填充PECH复合体系的弹性模量在不同测试温度和拉伸速率下随填料体积分数和粒子间距离的变化规律，同时考察了粒子堆积方式对弹性模量的影响，并运用逾渗理论解释了实验结果。

The yield of PECH reaches more than 95% on the conditions listed below: bisphenol A as initiator, catalyst dosage of 0.05 %,reaction temperature of 128℃.

当以双酚A为引发剂，催化剂用量为生成PECH量的0.05%，反应温度为128℃时，PECH的收率可大于95%，所得PECH的官能度为2~3，PECH的结构由IR、1H NMR及GPC确认。

Another destination would be the Cahal Pech Village Resort, which offers customized packages for a most memorable honeymoon in Belize.

另一目的地将是cahal佩奇乡村度假，提供了最难忘的蜜月定制包伯利兹。

The PECH obtained can be used to prepare energetic azide binders with top quality.

采用乳液双金属氰化物络合物代替Lewis酸类作为催化剂，使环氧氯丙烷开环聚合，制得相对分子质量较高及分子质量分布较窄的聚环氧氯丙烷，这种PECH可用于高质量的含能叠氮粘合剂中。

The ionic conductivity increases with increasing the content of lithium salt/PC solution and the ratio of PEUU/PECH.

PEUU/NBR共混物薄膜用高氯酸锂的PC溶液或高氯酸锂的γ-BL溶液增塑后，可以得到室温离子电导率较高的两相高分子电解质。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。