Numerical results reveal that the joint design of AM and truncated ARQ in V -BLAST system can achieve considerable spectral efficiency gain and outage probability reduction.

数据仿真结果表明，这种联合设计可以降低V-BLAST系统的中断率，并且获得可观的频谱效率增益。

In addition to technical means, re-optimizing the allocation of resources is an important way to achieve the energy saving and emission reduction in power generation industry.

除了技术手段之外，资源的优化重组也是实现发电行业节能减排的一个重要途径。

Its objective is to achieve the same improvements in lung function and exercise tolerance as lung volume reduction surgery while avoiding the surgical morbidity and mortality.

它的目标是获得与开胸肺减容手术相似的肺功能改善和运动能力提高，而减少开放手术时的并发症发生率和死亡率。

How can advertisers ensure the effectiveness of media delivery and effectively ensure those supporting products achieve sales targets on the condition of budget reduction?

如何在预算减少的情况下，还要保证媒体投放的有效性，有效的支持产品的销售达成预定目标。

Poor outcome was associated with delay to surgery, failure to achieve or maintain reduction, and femoral head fracture at the time of injury.

疗效差的与手术延迟、复位失败或内固定不牢靠以及受伤时合并股骨头骨折等因素相关。

Main ways to achieve this cost reduction arc the use of on-line condition monitoring, and a shift from time-based to condition-based maintenance.

降低成本的主要方法就是使用设备在线监测，并且要将基于时间的对变压器维护转变成基于工况的维护。