前导

Numbers can have leading zeros and be regarded as numbers if the cell is formated appropriately.

如果单元格的格式化是适当的，数字可以有前导0，并被作为数字对待。

In the planning of publishing efforts leading up to Episode II, writer Haden Blackman worked with the LucasArts time developing the Bounty Hunter game, and consulted with Leland Chee, Licensing's Keeper of the Holocron, and took the disparate Mandalorian story threads and made one backstory for Jango Fett.

作为《星球大战II》的前导故事，作家海登·布莱克曼与卢卡斯艺界合作，开发了电子游戏《赏金猎人》。

While this is going on, the ground sends up its own chain of shorter, positively charged leaders.

当继续进行，地面发出自己的比较短的正电荷前导。

Is sik Based on this one for the operation of modern management model, combined with the enterprise of the cause of physical, mining the lead professional to co-operate together, as the enterprise integration efforts with each other, with the exception of the vitality of enterprises has been demonstrated and has been a very positive response from the customers, the Enterprise Innovation always new, constantly on the existing basis, more sophisticated, in line with the trend of the modernization of business .

本企业为求永续发展，采落实内部精致分工、多元发展；在如何落实以客为尊，提供客户最完善周延的服务为前导，惟有融入与客户端共生共轨、共生共荣的理念，成为共生链的市场伙伴关系，企业的竞争力及持续力必然可长可久，沅晁即植基此一现代化管理模式来营运，并结合企业内各事业体，采各领专业以群策群力互相合作，经本企业积极努力互相整合，除已展现企业的生命力并获客户的热烈的回应，本企业秉持日新又新，不断在现有基础上更精进，符合现代化经营之潮流。

Methods: Sixty male rabbits with 8 weeks of age were randomly divided into the experimental group (n=36) and control group (n=24). The mandibles of rabbits in the experimental groups were induced to forward position by a functional appliance.

60只8周龄的日本大耳白兔，随机分成实验组(n=36)和对照组(n=24)，实验组动物每日24h戴用咬合前导矫正器。

Moving part that can cause injury to persons is less than 1500 revolutions per minute.

例外1：对于能对人体造成伤害的运动零件的前导边不会被用户碰到，并且其最大转速小于1500r/m的鼓形碎冰机

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。

In this study, the nattokinase gene was cloned into a prokaryon expression vector pET28a(superscript +) to construct the recombinant plasmid pETNK.

本研究将编码信号肽、前导肽和成熟肽在内的纳豆激酶基因克隆到原核表达载体pET28a中，获得重组表达质粒pETNK。

According to the recommended frame structure of IEEE802.16,the independent correlation of multiple preambles and the unique words in data sequence were adopted in the algorithm,and the initial timing offset was estimated.

该算法基于IEEE802.16推荐的帧结构，利用多个前导字的独立互相关特性和数据序列中插入的独特字，对定时误差进行初始估计，并用内插环路进行定时估计误差的跟踪，获得定时同步结果。

This paper deals with frame detection of OFDM signal with multiple-periodic preambles transmitted over frequency-selective channels and with existence of carrier fre-quency offset.

摘要该文研究了具有多周期前导字WLAN OFDM帧信号在多径弥散信道、存在载波频偏条件下的检测。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。