您要查找的是不是：
- The smaller white box next to the HV Power Supply is a variable low voltage DC power supply and is used to actuate the solenoid on the vacuum relay (discharge switch). 在高压电源旁边的那个小一点的白色盒子是一个可调的直流电源，用来驱动真空继电器的线圈（放电）。
- The anchor man in a relay team runs last. 接力队中的主力跑最后一棒。
- Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。
- Six teams competed in yesterday's relay race. 六个队参加了昨天的接力赛。
- His wife's death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。
- She want to relay the carpet in her new home. 她想重新铺设她新房子的地毯。
- Her husband's death left a vacuum in her life. 她丈夫的死使她的生活变得空虚。
- Some people are living in a vacuum. 有些人过着与世隔绝的生活。
- The concert was broadcast by relay. 这场音乐会是实况转播的。
- She wanted to relay the carpet in her new home. 她想重新铺设她新房子的地毯。
- A vacuum cleaner is a handy household tool. 吸尘器是一种使用方便的家庭用具。
- The shop repairs vacuum cleaners. 这家店修理吸尘器。
- A new relay of horses was harnessed to the cart. 用作轮换的马都已套到了那辆马车上。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- Sealed under low pressure or a partial vacuum. 抽空密封的在低压或部分真空状态下密封起来的
- vacuum relay 真空继电器
- Dirt and dust are drawn into a vacuum cleaner by suction. 污物和灰尘被吸入吸尘器。
- An electrical relay used to control the flow of power in a circuit. 开关一种用来控制电路中电流量的电流器件
- We could not pull apart two plates which enclosed a vacuum. 如果两个盘子间是真空，我们就无法将它们分开。
