It adopts bidirectional switch and on time rectification, and obtains high power factor, high efficiency and low THD.
它采用双向开关和同期整流，得到了高功率因子、高效率和低高次谐波。
Based on the analysis of the destruction mechanism of the durability of the concrete structure provide several effective measures for reference to THD designers and constructors.
针对混凝土结构耐久性的破坏机理的分析，提出了控制混凝土结构耐久性的有效措施，可供设计和施工人员参考。
Significance of science transfusion of thd patients with gastric carcinoma.
科学输血对胃癌手术患者的意义。
An ethylation catalyst Z937 with suitable stability were prepared on THD basis of NL.
在NL原粉基础上，制备了具有一定稳定性的乙基化催化剂z937。
As One of THD public policies, public Order and Good Custom has three attributes of legal principles, foundation of conduct and legal sources.
作为公共政策之一的公序良俗，具有法律原则、行为依据及法律渊源的三重属性。
What I wear depends on the time of the day and THD places that I am going to.
我的穿着是根据当天的时刻和我要去的地点来决定。
A special treatment is made in outlet boundary in which the subsonic and supersonic flow exist commonly. Block-Line-Gauss-Siedel method is used to solve THD differencing equations.
对离散方程采用线超松驰方法迭代求解，在亚音速与超音速气流共同存在的出口边界分情况进行了处理。
Variable time delay effects on THD dynamic stabilization of power amplifiers.
可变的时延影响功放的动态稳定。
When the hummingbird came inside, I closed THD door behind him, then set up another feeder.
蜂鸟飞进去后，我关上门，又放好一个食具。
Without the support of THD , we are not able to supply our clients with the best service.
如果没有THD的支持，我们是不可能为客户提供最好的服务的。
Compared to the traditional topology of multi-pulse rectifier, the rectifier realizes a lower THD, which is less than 5% required by the power system, and its power factor is above 0.
提出一种新的复合型整流器拓扑结构，该整流器与传统的多重化整流器相比，其THD达到了电力系统小于5%的要求，功率因数在0。
According to the data from airdrop test and comparing with the similar systems of foreign countries, it brings out some advice on improving THD system.
并且结合空投试验的数据及对比国外类似系统的设计，对系统存在的不足及改进方法提出了自己的意见。
Conclusion: Control THD food parasitoids of the key that enhance the diet hygiene and foodstuff hygiene management.
结论：加强饮食卫生及食品卫生管理是控制食物源性寄生虫病的关键。
How to choose the movement and method of being fit for mew techniques to train the skaters effectively is the main purpose and starting point of the author for THD different skaters.
对于不同层次的速滑运动员，如何选择适合新技术特点的专门性动作和方法，进行有效地专门性训练，是本文所研究的主要目的和出发点。
Use method of the least squares to build function relation between temperature and pressure, the space camber compensation method is realized and makes THD measuring error least.
利用最小二乘法，建立过热蒸汽的密度与温度、压力之间的函数关系，实现过热蒸汽的空间曲面补偿法，力求测量误差达到最小。
Among them, thd sighting on wild, ape-like creatures add to its mysterious sense.
其中，野人之谜的传说更给神农架增添了神秘的色彩。
The relationship between the measurement time and THD measurement accuracy is discussed, and the method of reducing the measurement time of the platform are put forward, I.
介绍了陀螺稳定平台的测试方法，推导了测量次数和测量精度的关系，讨论了陀螺稳定平台快速测试技术。
As one of inverters, Sinusoidal Pulse Width Modulation (SPWM) inverters can achieve low total harmonic distortion (THD) output wave.
正弦脉宽调制(SPWM)逆变器作为逆变器的一种，可输出谐波含量小的正弦波形。
Theoretical analysis and experimental results verify that the dual closed loop repetitive control based inverter has high output energy quality and low THD of grid-connected current.
理论分析和实验表明，基于双闭环重复控制的并网逆变器具有较高的输出电能质量和较低的并网电流谐波畸变率。
The hydrophobic effect in THD process of transfer of cationic surfactants from aqueous solution to the solid surface has been studied.
讨论了疏水效应在阳离子表面活性剂从水溶液中吸附到活性炭表面这一过程中所起的作用。
Two different modulation methods are used to modulate the inverter and their advantages and disadvantages are compared, including total harmonic distortion (THD) of voltage and current.
然后使用不同的调制方法对逆变器进行调制，并比较两种方法的优缺点，包括输出电压以及电流的总的谐波失真比率。
A lot of Japanese living forces were killed, of which in THD Wanjialing Battle, a whole reorganized.
它消耗了日军大量的有生力量，其中万家岭战役全歼日军一个整编师团。
To obtain the reason why floccules appear while frozen platelet being thawed, THD authors research several possible related factors.
为找出冰冻血小板融解后出现絮状物的原因，文章对相关的影响因素进行了探讨。
Through the parameters optimization, the power factor (PF) can be increased to95%and Total Harmonics Distortion (THD) can be decreased to below30%.
通过优化参数设置，可以使弧焊逆变电源的功率因数提高到95%，电流谐波畸变率低到30%。
Experiment result showed, the topology can make the device get to high Power Factor (PF), low Total Harmonic Distortion (THD) of input current, low ripple of output voltage, and high efficiency.
实验结果表明，应用该电路拓扑的实验装置，其功率因数较高，输入电流的总谐波畸变较低，输出电压纹波小，而且整个装置的效率也比较高。
Thd results showed that the content of saffron crocus after refinement were obviously higher (even doubled the samples) than before.
结果表明精制后的西红花甙含量明显高于精制前的含量，甚至是其一倍。
Thd results showed that the content of saffron crocus after refinement were obviously higher (even doubled the samples) than before.
结果表明精制后的西红花甙含量明显高于精制前的含量，甚至是其一倍。
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