| 1. | Research progress on thermodynamic properties of hfc - 227ea
地温规律及其可恢复特性增强传热研究 |
| 2. | Method for the determination of thickness , compression and recovery characteristics of textile floor coverings
铺地织物厚度压缩及恢复特性的测定方法 |
| 3. | To enable this automatic crash recovery feature , verify that the database configuration parameter autorestart is set to on
要启用自动应急恢复特性，需要验证是否将数据库配置参数autorestart设为on 。 |
| 4. | Based on the calculation of dielectric recovery characteristics of different kinds of nozzle , the optimization scheme of nozzle has been proposed i
以喷口型面为优化设计变量，以断路器介质恢复特性为优化设计目标，采用改进的powell方法作为喷口优化设计方法。 |
| 5. | After simulating the reverse recovery characteristics , the forward and backward i - v characteristics , carries distribution and current vectors et al by medici , the optimal design to some key parameters is proposed
同时对器件反向恢复特性、正反向-特性及载流子分布、电流矢量等物理量进行了模拟和详细的机理分析。 |
| 6. | A theoretical basis has been provided for improving the dielectric recovery characteristics of high voltage circuit breaker . optimization of the nozzle based on the computation of inverse problem of electric field / gas flow field
本文在对不同喷口结构断路器短路开断下介质恢复特性计算的基础上，首次进行了基于电场/气流场的高压s氏断路器喷口结构优化设计。 |
| 7. | In the thesis , the insulation recovery properties of spark gap switch are investigated through theoretic analyses and numerical calculation , and the influence of gas flow on the insulation recovery of switch is studied experimentally
本文从理论分析、数值计算等方面研究了气体火花开关的绝缘恢复特性,实验研究了气流对火花开关恢复速度的影响,其研究结果为火花开关的多脉冲运行奠定了坚实理论基础。 |
| 8. | With the high frequency trend of power electronic technique development , the switching power diodes must be conducted and turn off very fast , that is , the diodes should have short reverse recovery time , low peak reverse current and soft recovery characteristics
电力电子技术高频化的发展趋势要求功率开关二极管必须具有快速开通和高速关断的能力，即具有短的反向恢复时间( t _ ( rr ) ) ，较小的反向恢复电流( i _ ( rm ) )和软恢复特性。 |
| 9. | The researching results indicate that using the two kinds of novel structure , the fast - switching and the soft recovery characteristics of the device are much improved but not notable changed in forward drop , and the temperature characteristic is improved , too . most of the characteristics are far better than the normal pin diode structures
研究结果表明，在采用?基区渐变掺杂和台面结构后的p ~ + ( sige ) - n ~ - - n ~ +异质结中，我们得到了更快而软的反向恢复特性，和更低通态压降的正向导通特性，且温度特性也有明显改善。 |
| 10. | The researching results indicate the reverse recovery characteristics of the device are much improved : the reverse recovery time is remarkably shorted , the peak reverse current is notably reduced and the soft factor s is also increased in various degrees but not notable changed in forward drop when introducing the two kinds of novel structure
结果表明，采用新结构后，反向恢复特性大大改善，恢复时间明显缩短，软度因子s显著提高，反向峰值电流也有不同程度的降低，其综合性能远远高于si同类型结构及常规p ~ + ( sige ) - n ~ - - n ~ +二极管。 |
