According to the temporary technical specifications of the DC remote supply system of PAS cell station by Chinese telecommunication group,the key technical problems that are the DC-DC power,the multiplex unit,the protection of the touched power line and AC-DC conversion circuit when the multiplex ISDN signal line transmits the electricity.
描述了小灵通基站电源存在的问题及业界的一般解决方案,并结合《中国电信集团公司小灵通基站直流远供系统技术规范》(暂行)的要求,指明了复用ISDN信号线路进行电力传输时需要解决的关键技术难点:DC-DC电源、复用单元、电力线碰触防护、交直流电源切换单元。
Remove the AC supply lead before servicing or cleaning heads, rollers etc.
切断交流电源才能维修、清洗磁头、压轮等部件。
Remove the AC supply lead before servicing or cleaning heads, roller etc.
切断交流电源才能维修、洗清磁头、压轮等部件。
non-break AC power plant
无中断交流电源设备
Inserting the AC supply lead into the unit automatically disconnects the batteries.
交流电源导线连接本机时，机内干电池即自动切断。
A high-temperature cut-out isolates power supply to the heater.
高温断流器切断给通往热器的电源。
break [make] contact
切断 [接通] 电流,断[接]电
Switch off the gas, power, etc at the mains
切断煤气源、 电源等
cause to stop operating by disengaging a switch.
切断电源使停止运作。
AC current or voltage source. DC offset can be specified.
交流电流源或电压源。可指定直流偏移。
Note: Brake lag time of the DC power supply cut is no-load brake lag time.
注：空载制动时间为直流侧切断制动器电源的制动时间。
Device that switches off or breaks an electric circuit
断流器，保险装置（用以切断电路）
Research of Digital AC Voltage Controller Technology for LS-WEDM;
低速走丝线切割脉冲电源数字化交流调压技术研究
The repairman disconnected the television set before fixing it.
修理工在修电视机前先把电源切断。
The motor stopped because of its power supply being suddenly cut off .
电机停转是由于电源突然被切断。
harmonic content of an a.c.power supply
交流电源的谐波含量
combined a.c. and d.c. welding power source
交直流两用弧焊电源
full-automatic alternating current stabilized voltage supply
全自动交流稳压电源
flash of light produced by the breaking of an electric current
（切断电流而产生的） 电火花
