four poles meaning in Chinese
四极, 四端
Examples
- Electrical communication engineering ; four pole plug
电信工程.四极插头 - 2 very very few : three , four poles
2极数：三极四极 - Aerospace ; plug - in relays ; dc 28 v , two - and four pole , 5 amp , polarized , monostable
航空航天.直流28v . 5a . 2和4极极化单稳态插入式继电器 - Abstract : the experiences of teaching “ hinged chain four poles structure ” better by teaching tool are introduced
文摘:介绍了利用教具等手段，讲好“铰链四杆机构”的教学经验。 - Electromechanical switches for use in electronic equipment - part 4 : sectional specification for lever toggle switches - section 2 : detail specification for one pole , two pole , four pole , sealed lever toggle switches , 277 v a . c . maximum , 30 v d . c . maximum , 20 a maximum electrical rating
电子设备用机电式开关.第4部分:杠杆操纵拨动开关的分规范.第2节:最大交流电压为227伏最大直流电压为30伏最大电流为20安培的额定电功率，一极二极四极密封杠杆操作拨动开关详细规范