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- Why protective earth connection and zero connection can't be mixed up? 保护接地和保护接零为什么不能混用?
- The appliance is in class I therefore it must have the wire earth connected. 我是在课堂上的器具,因此它必须有丝地球之间的联系。
- Compact, Robust, General purpose three phase four line filter with earth connections. 紧凑,功能完善,通用三相四线滤波器,带接地。
- In order to safety,make suer that the earth connection of socket is secure before power on. 2 接通机器电源前,应确保电源插座接地良好,以防机器壳体带点而造成人身伤害。
- Safety earth connections must remain connected until the power system is ready to be energized. 安全接地必须在电力系统通电之前保持连接状态。
- Check that the bolt connections at the connectionblock and the earth connections are tight, and that the isolating contact system functions correctly. 检查回路连接和接地连接的螺钉是否紧固。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- This paper covers such important problems as earth connection,ups,super shielded transformer,earth free of power system and computer room, and methods to deal with them are also put forward. 介绍DCS和PLC供电系统设计和实践中关于接地、不间断电源、超隔离变压器、电源浮空和机房等几个主要问题及处理方法。
- The attraction of the moon for the earth causes the tides. 月球对地球的吸引力造成潮汐。
- The earth is only a speck in the universe. 地球在宇宙中只不过是一个小点罢了。
- How on earth do they manage to rob the bank? 他们到底怎么抢了银行的?
- A number of satellites are now circling the earth. 一些人造卫星现在正环绕地球飞行。
- The machine cast up a big heap of earth. 机器卷起了一大堆泥土。
- The red sun lights up the sky and the earth. 红太阳照亮了天空和大地。
- Who on earth is that female he's with? 跟他在一起的那个女人究竟是谁?
- Antarctica is the loneliest place on earth. 南极是地球上最偏远的地区。
- He dived his hand into the earth. 他将手插入泥土中。
- Earth worms are often used as bait. 蚯蚓常用作鱼饵。
- The earth in the garden is good, soft soil. 花园里的泥土松软肥沃。
- Many kinds of animals have vanished from the earth. 许多动物已人地球上消失了。