The width of the reflection pulse is increased and its amplitude reduced as the rise time of incident wave delays, which may to some extent be good for the detection of insulation faults. 入射波上升时间增长,反射脉冲变宽,幅值降低,但一定程度上有利于检测出绝缘故障。
The volume of an electric motor can be reduced by one third by using glass fiber for electric insulation. 用玻璃纤维作电器绝缘材料,可使电动机(达)积缩小1/。
The result demonstrated that power cost and heat loss cost was reduced effectively, though costs of thermal insulation layer was increased, so as to save total cost effectively. 结果表明采用这种方法虽然增加了保温层的投资但是动力费用和热力费用都得到有效降低,从而有效节省了总投资。
Under liquid nitrogen temperature, the thermal conductivity can be reduced to 0.86 × 10-2 W/ m · K, which indicates that polyurethane foam is an excellent type of insulation material in system of transportation and storage for liquid nitrogen. 在液氮温度下聚氨酯泡沫的热导率可以达到0.86×10-2W/m·K,结果表明:此材料在液氮的输运系统中是一种优良的绝热材料。
The exterior noise of the light-duty truck is reduced through choosing reasonable sound absorption, insulation materials and noise control methods. 根据被试轻型载货汽车车外主要噪声源的特性合理地选择吸声、隔声材料和噪声控制方案,对其进行了降噪处理。
The results show that the lining thickness is reduced and the volume of ladle is enlarged, so the ladleful is increased and the thermal insulation is improved. 这不仅可以减小钢包永久衬的厚度、增大钢包有效容积,还能提高钢包装钢量和保温效果,有利于避免VD炉溢渣。
SOI HVIC ( Silicon On Insulator High Voltage Integrated Circuit) is the mainstream and trend of the Power Integrated Circuit ( PIC) due to the improved no latch-up, reduced leakage current, perfect irradiation hardness, and improved insulation. SOI(SilicononInsulator)高压集成电路具有无闩锁、漏电流小、抗辐射、隔离性能好等优点,已成为功率集成电路(PowerIntegratedCircuit)的重要发展方向。
Treating Reduced Insulation of Transfomer by Spraying Hot Oil 采用热油喷淋处理变压器绝缘降低在现场的应用
The result showed that the noise level of outdoor part of the air conditioner is reduced by 13? dB after installing sound insulation board and flat resisting muffler and consideration of ventilation, cooling and low wind impedance of outdoor part of the air conditioner. 结果表明,在考虑空调室外机通风散热及低风阻的前提下,隔声板及片式阻性消声器的安装,对空调室外机噪声插入消声量可达13dB。
But in the south of China, the relative humidity is heavy and last for a long time in rainy season. The insulation of the terminal box will be reduced and even worse when discharge phenomenon happened on the insulation surface if they work in such bad environment. 但是在我国南方地域,雨季的相对湿度大,持续时间长,端子箱内的设备长期运行于潮湿的环境中,设备的绝缘会降低甚至在设备的表面会产生沿面放电的现象。
Made the power function of objective function as the fitness function to enhance the option function of GA. After optimization the maximum of the electric field has been reduced, and the electric field distribution in the main insulation has been improved. 通过优化降低了最大场强,同时也使主绝缘整体的电场分布得到了改善。
In the long run, High voltage switchgear was influenced by electrical, thermal, chemical and abnormal conditions of the formation of insulation deterioration, easily lead to reduced strength of electrical insulation, and even failure. 在长期运行中,高压开关柜受电、热、化学及异常状况影响形成绝缘劣化,易导致电气绝缘强度降低,甚至发生故障。
The investigation revealed, that the amount of retained austenitic can be sharply reduced by lower cryogenic temperature and extend insulation time. 研究结果表明,通过降低深冷处理温度和延长深冷保温时间均可大幅降低残余奥氏体的目的。