| 1. | Frequency conversion control of master pump motor
主泵马达变频控制。 |
| 2. | The main pump uses frequency conversion control
主泵采用变频控制。 |
| 3. | Frequency conversion control for beater in the fermentation cylinder of terramycin
土霉素发酵罐搅拌器的变频调速控制 |
| 4. | Rural land external benefit internalization and rural - urban land conversion control
农地外部效益内在化与农地城市流转控制 |
| 5. | The thesis analyzes the main character of reefer units fan motors when they run with frequency conversion control and the variable discharge character of evaporator
本文分析了冷藏集装箱制冷系统风机(冷凝器和蒸发器风机)变频节能运行的基本特性，以及蒸发器的变流量特性。 |
| 6. | The color film was made on stainless steel through chemical coloring , and the formation rate , color conversion controlling and corrosion resistance of color film were also studied
摘要对采用化学着色法在溶液中不锈钢氧化色膜的生成速度、颜色转换控制、膜层的结构及其抗蚀性能进行了试验研究。 |
| 7. | Definition of the multivariable control strategy has been provided in sufficient detail with emphasis on the regenerator control , cracking conversion control , pressure balance control , main fractionator bottom control and cracking yields control
从烧焦控制、裂化苛刻度控制、压力平衡控制、分馏塔底控制和裂化产率优化控制等五方面详细论述了反应-再生系统的控制策略。 |
| 8. | According to the space vector modulation method of the equivalent structure of the ac - dc - ac transformation , the transformation relations of the matrix converter are deeply investigated . the ac - ac direct conversion control and the double - space - vector pwm scheme of the matrix converter are deduced , the four - step current commutation strategy of matrix converter is expatiated , the design method of input filter and over voltage protection circuit is analyzed , and the modeling and simulation of a three - phase matrix converter are implemented
从等效交-直-交变换的空间矢量调制方法出发，深入分析了矩阵式变频器的变换关系，导出了交-交直接变换控制规律和双空间矢量脉宽调制技术，阐述了矩阵式变频器的换流控制策略，分析了输入滤波器和过电压保护电路的设计方法，实现了矩阵式变频器的建模和运行分析。 |
| 9. | Abstract : this paper introduces the unavoidable disadvantages of the the marine cargo crane ' s relay - contactor control system and the utilizing of the programmable logic controller （ plc ） and frequency conversion control technology for the marine cargo crane , and describes the main features of the marine cargo crane ' s frequency conversion control system with programmable logic controller such as energy economization and reliable protection
文摘:介绍了传统的船用起货机继电器?接触器控制系统及其存在的问题和可编程控器及交流变频控制技术在船用起货机上的应用，描述船用起货机plc变频控制系统的主要特性，如节能和可靠性保护。 |
| 10. | So it is necessary to analyze theoretically the problems of farmland conversion in the rural - urban area so as to offer the theoretic basis for the adjustment and control of farmland conversion in the rural - urban , and ensure the assignment of farmland . this paper examines the farmland conversion problems of the chinese urban - rural areas . at first this paper illustrates the background of farmland conversion problems in the rural - urban area , then quotes some examples of foreign farmland conversion control that our country could draw lessons from
本文首先对城乡结合部农地流转问题产生的背景进行分析，而后引用国外农地流转管制资料，分析其可为我国借鉴的经验，再对农地流转问题进行理论研究，分析城乡结合部农地流转的机制和它的微观经济基础，以及城乡结合部农地流转动态性的特点，并对农地流转的外部性问题作了阐述和分析，提出解决方案，还提出城乡结合部农地流转的目标取向。 |
