查询词典 modulation

In the second part, we apply CMFBs to multicarrier modulation. The design and implementation of orthogonally multiplexed QAM systems are investigated in the frame of multirate signal processing.

第二部分研究余弦调制正交滤波器组在多载波调制中的应用，在多速率信号处理的理论框架下研究离散时间正交多路QAM系统的设计和实现方法。

We concluded that bisphosphonate can alter the differentiation of MC3T3-E1 cell, but further study is needed to verify its modulation of osteoclastic activity and physiological metabolic rate of bone.

从我们的实验结果发现双磷酸盐药物可能改变MC3T3-E1细胞的分化，但是否同时因此调控蚀骨细胞的活性和骨骼生理代谢速率则需要进一步研究。

We can totally realize what is customer's true requirement and accroding to that to do related modulation to make our service get or even overfill their satisfaction.

我们能够充分认识顾客真正的需求，并进行相应调整，使我们的服务达到甚至超出顾客预期。

Then the modulation character and realize theory of two overmodulation mode are analyzed in depth.

最后，根据每个扇区中开关矢量作用时间，采用软塑料托盘件构造法，在TMS320LF2407A硬件上实现了SVPWM。

At last, an experiment is carried out according to the time duration by means of software construction method.According to the linear modulation, an overmodulation technology based on voltage space vector is proposed.

其次，根据空间电压矢量所在的扇区，选择相邻有效开关矢量，在伏秒平衡的法则下，计算各有效开关矢量的作用时间。

An overmodulation algorithm for space vector pulse width modulation suitable for current source converters is proposed.

提出一种适用于电流型变流器(current source conver- ters， CSC)的空间矢量过调制策略。

The proposed algorithm divides the overmodulation range into two parts, and allows smooth transitions through the entire operating area, from the linear range up to six-step operation, and keeps the linear relationship between the output current and the modulation index.

该方法根据调制比将整个过调制区域分为两部分，能实现变流器从线性区域到六脉波状态的平滑过渡，并且保证输出电流和调制比之间成线性关系。

NADP-Dependent Retinol Dehydrogenase/Reductase identified from rabbit liver cytosol is involved in oxidoreduction between retinol and retinal with high activity. Therefore, NRDR plays an important role in modulation of the retinoids and RA homeostasis.

辅酶Ⅱ依赖性视黄醇脱氢/还原酶NADP(H-Dependent Retinol Dehydrogenase /Reductase NRDR是黄东阳教授等从兔肝中发现并纯化的一种酶，具有很高的催化视黄醛和视黄醇之间氧化还原反应的活性，对体内类视黄醇和维甲酸的代谢平衡起着重要的调节作用。

The calls of non-passerine are some kinds of monotonous dull vocalizations with the characteristics of low and deep frequency, single syllable, low basic frequency and with no ability of modulation in frequency and amplitude. Most of the calls are monotonous and low quality mainly based on the basic song. Compare the vocal of sub-oscine passerine with non-passerine, they have some similar aspects, but the former possesses of stronger capability of vocal control.

非鸣禽的叫声低沉而单调，音节种类单一，基本音频率低，缺乏频率调制以及幅度调制的能力，叫声的品质因数很低，不悦耳，大多为以基本音为主的单音调低音品叫声，亚鸣禽的叫声与非鸣禽近似，但在控声能力方面又有所提高。

GDxVCC is an automatic computer- controlling system, which combines scanning laser technology and polarization modulation, provides retardation map of peripapillary retinal nerve fiber layer caused by birefringent properties of the RNFL. The quantitative description of RNFL may be obtained after the map is analyzed.

GDxVCC系统采用自动化的电子计算机控制系统，将激光扫描技术和偏振调制器相结合，提供因视网膜神经纤维层双折射特性所产生的视盘周围视网膜神经纤维层的延迟图像，通过对图像的分析处理，获得视盘周围视网膜神经纤维层厚度的定量描述。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。