摆动继电器, 重锤幌动式汞管继电器的英文

astatic relay

• 摆动:    swing; sway; oscil ...
• 继电器:    electric relay; re ...
• 重:    weight
• 锤:    a metal ball with ...
• 幌:    heavy curtain
• 动:    harness cause diso ...
• 式:    type; style
• 汞:    mercury
• 管:    pipe; tube