查询词典 channel

According to the special requirements for centrifugal pump PIV measurement, a PIV testing platform was established to measure the instantaneous velocity in the double-channel pump with different impeller design, i.e., the double-channel impeller and the two-blade impeller, under different working conditions. The measured absolute velocity fields were transfered to relative velocity fields by specially developed code.

首次用PIV技术对设计工况与非设计工况下双流道叶轮及双叶片叶轮的内部流动分别进行了测量，并自编程序对测量得到的绝对速度场进行处理，得到相对速度分布。

A method for realizing special-line user mechanism at reverse direction in communication system includes confirming end object packet length of reverse special-line user, confirming TxT2Pmin and TxT2Pmax value-taken scope of emission service channel energy to pilot frequency channel power grain TxT2P, setting allowable packet length of data packet being send currently to be not less than confirmed packet length and setting reverse packet as per allowable packet length then transmitting set reverse packet according to set TxT2Pmin and TxT2Pmax.

本发明公开了一种通讯系统中在反向实现专线用户机制的方法，该方法包括：A、确定反向专线用户的终止目标包长；B、确定发射的业务信道能量相对导频信道的功率增益TxT2P的最小值(TxT2Pmin)和最大值(TxT2Pmax)的取值范围；将TxT2Pmin和TxT2Pmax设置在所述取值范围内；C、将当前所发送数据包的允许包长设置为大于等于步骤A所确定的包长，按照所述允许包长组反向包；D、按照所设置的TxT2Pmin、TxT2Pmax发送所组的反向包。

AMC selection module periodically measures the wireless channel, updates the state transition matrix of finite-state Markov chain to trace the channel status, and dynamically selects transmission mode, which includes modulation and forward error coding, so as to guarantee packet error rate performance and improve spectrum efficiency.

AMC选择模块周期性地测量无线信道，更新马尔可夫模型转移概率矩阵以跟踪当前的信道特征，动态选择物理层传输模式（包括调制方式和前项纠错编码方式），在保证系统误包率要求的同时，最大可能地提高系统频谱效率。

In the range frequency and compressed azimuth time domain of Tri-channel SAR/GMTI data, the clutter is cancelled by the mutual channel, and the PRF ambiguity number can be estimated from the remaining signals.

首先将三通道SAR/GMTI数据在方位压缩后的距离频域两两对消抑制杂波，然后进行PRF模糊数估计。

The standard flow channel valve can be used: the United States NIBCO T-580-70 Valve; S-580-70 Valve (2), available to full-flow channel valve indented Path: The United States NIBCO T-585-70 Valve; S-585-70 Valve 2, check valve: Path DN65 valve should be used the following Swing Y-shaped structure, and in accordance with the United States valves and pipe fittings Manufacturers Standardization Society MSS-SP80 standards of manufacture, working pressure 125 lbs class, in line with the United States Society for Testing and Materials Standard Bronze ASTMB62 valve, configuration, Teflon flap valve seat, or seat configuration flexibility of the spring-driven lift-type check valve.

可采用的标准流道阀门：美国尼伯科T-580-70球阀；S-580-70球阀（2）、可采用的不缩径全流道阀门：美国尼伯科T-585-70球阀；S-585-70球阀 2、止回阀：通径DN65以下的止回阀应该采用Y形旋启式结构，并按照美国阀门和管件制造商标准化协会MSS-SP80标准制造，工作压力125磅级，符合美国材料试验协会ASTMB62标准的青铜阀体，配置聚四氟乙烯阀座阀瓣，或配置弹性阀座的弹簧驱动升降式止回阀。

The article introduced the 64 kbit/s serial data transmission channel for relay protection signal,which can overcome the defects of tradition high frequency channel.

模拟试验的必要性传统的高频保护收发信机在电力系统继电保护信号的传输方面起到了很重要的作用。

Study on error code performance of relay protection signal over optical fiber channel ;2. Some suggestions for the protection with the optical fiber channel construction and the maintenance are proposed.

分析了山西电网中以光纤作为保护通道的优越性，针对不同的线路保护采用不同种类的光纤保护方式，并对光纤保护设备在安装、调试及日后维护过程中出现的问题进行分析，为保护用光纤通道的建设及维护提一些建议。

It is used for inside communications in the power system and for transmitting information about maintenance of transmission line,and may be also used for common public service network,and as high frequency channel,movement signal and communication channel for relay protection in power system.

用于电力系统内部的通信及输电线路维护保养信息的传送，也可用于一般的公共服务网络，作为电力系统继电保护的高频通道、运动信号及通信频道等使用，同时能起到良好导体屏蔽地线的作用。

Computer simulation result shows that two algorithms can estimate channel fading coefficients more effectively by setting bigger data block length N.3 Joint ML block semi-blind channel estimation is applied to OFDM system.

计算机仿真结果表明，这两种算法均可以通过设置较大的数据分组长度N，达到有效的信道估计效果。

Current properties reveal that the mCa1 channel underlies the human MCU and that the mCa2 channel is responsible for the ruthenium red–insensitive/low-sensitivity non-MCU–type mitochondrial Ca2+ uptake.

现有的功能研究表明mCa1是人单向转运体的基础，mCa2通道则在钉红不敏感/轻度敏感的非单向转运体钙离子摄取途径中扮演重要角色。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。