包络环

The stabiliazation on the ultraviolet light, the ultrasonic radialization and the oxydation of KClO3 for vitamin E and its inclusion compound by β-cyclodextrin is investigate.

用β-环糊精对V进行包络，制备了V-β-环糊精包络物，考察了V及其包络物对紫外光和超声波辐射以及KClO3氧化的稳定性。

Vitamin E-β-cyclodextrin compound inclusion was gotten by inclosing the vitamin F with β-cyclodextrin.

用β-环糊精对维生素E进行包络，制备了VE-β-环糊精包络物，并用红外光谱、紫外光谱和差热分析对包络产物进行了表征。

Vitamin E-β-cyclodextrin compound inclusion was gotten by inclosing the vitamin Ewithβ-cyclodextrin.

用β-环糊精对维生素E进行包络，制备了VE-β-环糊精包络物，并用红外光谱、紫外光谱和差热分析对包络产物进行了表征。

Finally, the analysis results of assembly interference and assembly clearance show that the numerical models established have high degree of precision. That can be used as a reference for the profile of cutter and the virtual design of double-roller enveloping hourglass worm reducer.

最后的装配干涉和装配间隙分析结果表明，建立的数字化模型精确度很高，可以为加工蜗杆时刀具廓形的设计，无侧隙双滚子包络环面蜗杆减速器的虚拟设计等后续工作提供参考依据。

The content of this research is as follows: The structure and the work principle of this worm gearing have been introduced.

主要内容如下：阐述了双滚子包络环面蜗杆传动的结构和传动原理。

A gearing in which each element partially encloses the other is, of course, a double-enveloping worm gearing.

1传动装置，其中每个元素部分，周边有其他的，当然是双包络环面蜗杆传动。

Based on the gear geometry of the double enveloping hourglass worm gearing, the tooth surface of the wheel, which is composed of the so-called the original and new contact surfaces, is derived.

基于齿轮几何形状的双包络环面蜗杆的齿面的车轮，后者是由所谓的原始的和新的接触面，导出。

The double-enveloping hourglass worm gearing is one kind of mechanical transmission drivers, which is developed by China and Japan firstly and is used widely in national defense and civil producing industries.

平面二次包络环面蜗杆传动是由我国和日本率先研究成功的一种机械传动方式，在国防和民用工业领域内得到大量的应用。

The results provide theoretical guide for reasonable selecting of geometric design parameters of double-roller enveloping hourglass worm gearing.

所得结果有助于合理选择双滚子包络环面蜗杆传动的几何设计参数。

The tooth contact and kinematic precision of cone-generated double-enveloping worm gearing with machining and assembling errors have been investigated.

对存在加工及装配误差的锥面二次包络环面蜗杆传动进行了接触分析，探讨了各种制造误差对齿面接触质量和运动精度的影响规律和影响程度，提出了矫正由加工误差引起的齿面接触偏倚，减小运动误差的装配调整作业法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。