查询词典 buffer block

Wind the wire rope from the two guiding block of the pillar, pass through the fall block, fix on the pillar or on the pulling shaft axle of weight limit appliance

4.4.4将卷扬机上钢丝绳从顶梁的两只导向滑轮上绕过，穿过吊笼上的动滑轮，固定在顶梁上（或顶梁上悬挂的重量限制器的拉杆轴上）。

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

System cake: The well-fermented dough on the case, the roll into the surface film, the sesame oil, pastry or meat stalls in the surface film, the roll into a roll, cut into 50 cm wide, 30 cm face block; to face block bag into a circular stained with sesame seeds, and then one by one along the border, so that around the tilt, in the middle low surface level, into a circle around the pot-shaped tilt.

制饼：将发酵好的面团放在案上，擀成面片，把香油、油酥或肉馅摊在面片上，卷成卷，切成长50厘米、宽30厘米的面块；把面块包成圆形沾上芝麻，再逐个沿边，使四周翘起，中间低面平，成周边翘起的圆盆子状。

It's an enterprise that mainly manufactures and exports "Free Room" brand series condiments which include soup block, granular chicken essence, chicken block, chicken powder, and beef powder.

主要生产经营百乐巢牌系列调味品，如汤块、颗粒状鸡精、块状鸡精、鸡粉、牛肉粉等。

Pre-erection joint of hull block which is erected at any location, to be painted before leak test and not to be considered as block erection joint.

Pre-erection联合赫尔块，是在任何位置，而不是画泄漏试验之前，应被视为街区安装接头。

Since DDA is still under development, one of concerns is how to improve block displacement functions so that the block stress precision can be improved.

第四章进一步研究基于自然邻接点插值法的DDA方法，对比了其与移动最小二乘法的优劣，表明前者计算效率更高，缺点是需要处理特殊网格生成。

Are made. Since DDA is still under development, one of concerns is how to improve block displacement functions so that the block stress precision can be improved.

DDA方法还处在研究发展阶段，其中，为提高块体应力场精度而改进现有块体位移模式是研究的热点方向之一。

According to the function of distributed emulator, optical information processing and image multi-object tracking system, the following three aspects were emphasized in this dissertation. Firstly, a vast virtual terrain, ground radar models and canyons were created for the distributed emulator with modeling software Creator. The radars were driven to scan during emulating and the real time terrain code was sent to Radar module. Secondly, an optics channel simulating the optics camera of a virtual aircraft was implemented with simulating software Vega. The 2-D information got from the channel was translated and sent to multi-sensor information fusion system as an optics information source. Thirdly, the dissertation studied some motion estimation methods and analyzed the factors which influence the speed and the precision of the block matching algorithms. Then an improved block matching method was proposed for image multi-object tracking system and applied in the system combined with frame difference method.

论文根据多传感信息融合实验系统中的分布式飞行仿真系统、光学信号处理器和图像多目标跟踪系统三个子系统的功能要求，具体完成了以下三方面的工作：首先利用建模软件Creator创建分布式飞行仿真系统中的大面积地形、场景中的地面雷达模型和峡谷地形，并在仿真过程中实时驱动雷达模型的扫描，同时为后续雷达仿真模块提供实时地形编码；其次利用仿真软件Vega，在分布式仿真系统中为光学信号处理器设计实现了光学通道，模拟飞行器的光学摄像机的功能，并且对由此通道获得的目标二维光学信息进行转化处理，作为光学信息源发送给后续的多传感信息融合器；最后针对图像多目标跟踪系统，在研究图像分割运动估计算法的基础上，通过分析影响块匹配算法速度和精度的因素，改进了块匹配运动估计算法，结合差分法可应用到目标跟踪系统中。

Addition of 100 gL^(-1) glucose to ropivacaine in spinal anaesthesia can shorten the onsets and durations of sensory and motor block and increase the degree of sensory and motor block.

罗哌卡因蛛网膜下腔阻滞时，加入100 gL^(-1)葡萄糖可明显缩短感觉、运动阻滞的起效时间和持续时间，增加感觉阻滞的平面及运动阻滞的程度。

Addition of 100 g.L-1 glucose to ropivacaine in spinal anaesthesia can shorten the onsets and durations of sensory and motor block and increase the degree of sensory and motor block.

罗哌卡因蛛网膜下腔阻滞时，加入100 g·L-1葡萄糖可明显缩短感觉、运动阻滞的起效时间和持续时间，增加感觉阻滞的平面及运动阻滞的程度。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样