无
- 与 无 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Tsou people is minority on the ragged edge. This study investigated Tsou language use and language ability by sociolinguistic methods. In the result, well known process of vanishing language were uncovered for Tsou language usage. 1 borrowing words, 2 incomplete bilingual, 3 the language cann't be handed down from generation to generation, and 4 unbalanced bilingual community and language competition.
邹语是伫危险边缘的一今少数民族语言,这篇研究用社会语言学的方法调查邹族的语言使用和语言能力,结果显示邹族的语言使用已经出现「消失中语言」的成分,包含:1字语的借用;2无完整的双语情形;3语言无法度传hōo面后一代;4无平衡的双语群体kap语言面顶的竞争。
-
In order to understand and calculate the reactive power of the nonsinusoidal electric circuit accurately and analyses the the influence of the reactive power in the nonsinusoidal electric circuit on reactive energy measurement .
为了能够准确地理解和计算非正弦电路的无功功率,分析非正弦无功对无功电能计量的影响。
-
A kind of automatic reactive compensation control circuit in network designed by making use of Hall power sensor has already found its application to practice thus realizing the on-line automatic detection and the optimal compensation of network reactive power.
一种利用霍尔功率传感器设计的电网无功功率自动补偿控制电路已在实际中得到良好的应用,实现了电网无功功率的在线自动检测,从而达到电网无功功率的最佳补偿。
-
It calculates the active power and reactive power of the net side of the rectification system on-line, which based on the three-phase circuit instantaneous reactive power theory. To provide fast and accurate real-time measurements of active and reactive for new type static var compensators, this paper designs a optimization digital low-pass filter with the approach by combining the Butterworth filters with mean filter.
基于改进的瞬时无功功率理论,在线计算整流系统网侧有功和无功功率,将Butterworth滤波器和均值滤波器相结合,优化设计高性能的数字低通滤波器,为新型SVC提供快速而准确的有功与无功在线测量值。
-
According to the reactive characteristics of the distributed generation and the shortcomings of the compensation system for static var compensator, based on the instantanous reactive theory and symmetrical component method, a real-time method for calculating the value of reactive power of the system is presented.
根据分布式发电的无功特点及现在SVC补偿系统的不足,利用瞬时无功理论和对称分量法,提出一种实时求取电力系统无功功率的方法。
-
The technique made full use of the characteristic of PR controller which can realize zero steady-state error in AC input signal in stationary frame. In the method, the active and reactive current component in the vector control strategy were transformed in the stationary frame to achieve the objective of keeping the DC-link voltage constant, adjusting the power factor and decoupling the active and reactive power. Compared with conventional double close-loop proportional integral controller, the PR technique is better in harmonic compensation without the complex rotating frame transformation and the couple or feedback voltage which is easily influenced by temperature and circuit parameters. The control algorithm is easy to be realized while the robustness and power quality is improved.
该方法充分利用了PR控制器能够在静止坐标系下对交流输入信号无静差控制的优势,将矢量控制策略下的有功电流和无功电流分量转换到静止坐标系下进行调节,实现网侧变换器维持直流电压稳定和调节功率因数的控制任务和双馈电机有功、无功功率的解耦控制,与传统的双闭环PI控制相比,该策略无需繁琐的坐标旋转变换,不存在受温度及电路参数影响的耦合项和前馈补偿项,且易于实现对系统低次谐波电流的补偿,减小了控制算法实现难度,提高了控制系统的鲁棒性和电网电能质量。
-
The thinking produced in the daytime will recompose and evolve in my dream at night so that is like a moive without beginning and ending.
白天脑海中集成的信息和思绪便会在夜晚的梦中无休止的演化和重组,以至于每晚的梦犹如一部即无开头又无结局的电影。
-
One was that research objects were ruleless and dishevelled. Another was that research target was reducing Ommission Error of change parcel. The Distance Discriminate Analysis was meliorated in the paper to get better recognizing effect. One was turning the question of change parcel to the question of standard land type. Another was making strict regulation. This improved Distance Discriminate Analysis is not only visual and briefness, but also easy operational.
在设计变化地块识别的判决函数时,本文针对变化地块识别工作的特殊性:1、以无规律性、无集群性的变更地块为研究对象;2、以降低变更地块的漏判率为目标,对距离判别法做了如下改良:1、将无规律、无集群性的变更地块识别问题转化为有规律、有集群性的地类识别问题;2、严格判类规则(将落入误判高发区的待测样本视为变更地块),以减少变更地块的漏判。
-
Double—blind, randomized, placebo—controlled clinical trail on Chronic Congestive Heart Failure with Shengmai capsule treatmentResult:5.1 The left room shoots the blood score EF value:EF value three hour point total to distribute the characteristic obeys positive the normal distributes, proceeding the independent sample t examination: diagnosing moment hour point an EF value variety of placebo group and treatment group have no to show the difference of obvious; 12 weeks with 24 week hour point, an EF value variety of placebo group and treatment group also have no to show the difference of obvious.
两组EF值再分别作自身前后对照——配对样本t检验:安慰剂组在就诊时分别和试验12周、24周进行对照,发现其自身前后的EF值并无显著性差异(P>0.05);治疗组也作同样对照,虽然EF值在三个时点的变化均无显著性差异(>0.05)。5.2 NYHA心功能分级安慰剂组和治疗组治疗前后的非参数检验——Wilcoxon检验:两组治疗前后心功能分级对照无显著性差异(>0.05)。
-
Methods: Symptomless group consist of 100 adults without cervicobrachialgia history, male female equalization. Scan by CT, measuring cross section and CT value of scalene anterior muscle, as normal contrast; 32 final diagnosis cases in treat group, by means of same method, statistics and comparison, analysis. Adopt maneuver to therapy. Analysis was done after one course followed by short-term and long-term.
无症状组选取不同年龄组无颈臂痛病史者100人,男女各半;CT平扫其C6上缘-C7上缘,测量前斜角肌横断面面积及CT值,统计后作为正常值参照;治疗组取确诊的无并发骨性改变及椎管内病变的前斜角肌综合征患者32人,CT平扫其同一平面,测量其患侧前斜角肌横断面面积及CT值,进行对比分析;采用手法进行治疗;1疗程后按近、远期进行随访,分析疗效。
- 推荐网络例句
-
And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.
同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。
-
Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.
运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。
-
If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.
如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。