本文对“分层分组教学”教学法谈了自己的见解和做法。
In this paper, "Hierarchical group teaching," teaching about his views and practices.
目前的多播密钥管理方案主要包括集中式、分布式和分层分组式，它们各有优缺点，适用于不同的情况。
At present, group key management mainly divided into centralized, distributed and hierarchical forms, all of them have their own character and can be used in different applications.
除了原始平台层之外的所有分层都并不严格；这些分层是以软件要素的可观测逻辑化分组为基础的。
None of the layering, except for the original platform layer, was strict; it was based around logical, observable groupings of software elements.
约束被分组到具有分层结构的目录中。
Constraints are grouped into hierarchically structured categories. A constraint category defines the following attributes.
空时编码包括三种：空时网格编码(STTC)、空时分层编码(LST)和空时分组编码(STBC)。
Space-time coding includes space-time trellis coding (STTC), layered space-time coding (LSTC) and space-time block coding (STBC).
对原煤筒仓仓壁混凝土分组、分区域、分层浇注，解决了混凝土浇注区段过长引起的温度应力问题。
Temperature stress induced by long pouring section is prevented by pouting concrete in different groups, areas and layers.
对原煤筒仓仓壁混凝土分组、分区域、分层浇注，解决了混凝土浇注区段过长引起的温度应力问题。
Temperature stress induced by long pouring section is prevented by pouring concrete in different groups, areas and layers.
引入分层、分组对象的管理机制，极大增强了软件编辑、处理花样设计的功能。
Our newly introduced layer, group object management mechanism strongly strengthens the software's processing technology.
但对分集增益而言，网格空时码和分组空时码均可达到系统所能提供的最大分集增益，而分层空时码由于受实现方式的制约，只能得到其中一部分分集增益。
But as to the diversity gains, STCM and STBC can achieve the maximum diversity that the system provides, while LST only obtains a small part of it because of its limited application.
本文通过技术经济比较，对营城煤矿条件下，薄及中厚煤层群采区分层或分组的合理布置方式作了分析。用经济分析法确定了在这种条件下采区分组布置的合理界限。
Through the comparison of technical economy, this paper has analysed the proper layout of individual beds or separate groups for multiple seams of thin and medium thickness in the Ying Cheng Colliery.
对责任护士进行分层次培训考核及管理，分组弹性排班。
Different levels of responsibility nurses were trained assessment and managed, group scheduling flexibility.
设计：分层抽样，随机分组对照，量效分析。
DESIGN: Grade sampling, randomized controlled quantitative analysis.
主要介绍了发射分集技术中用于抗信道衰落和提高系统容量的空时分组码和分层空时码的原理和基本特点，并对这些空时编码技术进行了性能分析。
To overcome the bad performance in combating fading of BLAST and low code rate of STBC, a layered structure STBC is introduced in this article by combining BLAST and STBC.
主要介绍了发射分集技术中用于抗信道衰落和提高系统容量的空时分组码和分层空时码的原理和基本特点，并对这些空时编码技术进行了性能分析。
To overcome the bad performance in combating fading of BLAST and low code rate of STBC, a layered structure STBC is introduced in this article by combining BLAST and STBC.
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