断电

• I ' m afraid i ' ll have to ring off . someone is calling me
  恐怕我得挂断电话了,有人叫我。
• Technical specifications for tungsten arm of breaker contact
  断电器触点用钨杆.技术条件
• Data retain over 60 days when power failure
  当断电时，记忆资料及计时器可保存超过60天。
• Tom gave the message to jim and hung up
  汤姆把消息告诉吉姆后挂断电话。
• Maximum controllable current of the mos controlled thyristor
  控制晶闸管的最大可关断电流
• On protector of safe power - off for overhead lines
  架空线安全断电保护器
• Times of rated short - circuit breaking current time : 20
  额定短路开断电流开断次数次： 20
• Rating breaking current of electric cable 10
  额定电缆充电开断电流a 10
• Hang on , please . i ' ll switch you to the manager
  请不要挂断电话。我给你转接到经理那儿去。
• Technical specifications for magneto breakers
  磁电机用断电器.技术条件