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- The gas main explode and set fire to the house. 煤气总管爆炸引起房子失火。
- Gas main switch 气体主开关
- Set the main switch selector to A (auto). 把主选择开关调至A(自动)。
- No power even when the main switch is turned on. 即使总开关打开了也没有电。
- The gas main exploded and set fire to the house. 煤气总管爆炸引起房子失火。
- A bulldozer had severed a gas main. 推土机切断了一条煤气总管道。
- Switch off the system at the main switch of the tablet press. 压片主开关关闭系统。
- Set the main switch selector to the desired operation. 设置主选择开关在所需的操作状态。
- The workman accidentally drilled a hole in the gas main. 那个技工意外地在煤气总管上钻了一个洞。
- Set the main switch selector to A (auto) or M (manual). 把主选择开关转到A(自动)或M(手动)
- The jitter of the main switch is less than 1. 5ns(RMS ). Blumlein主开关工作电压大于280kV;抖动小于1.;5ns(均方根值)。
- An exploding gas main shattered the tiles in the courtyard. 爆炸的煤气主要管线把院子里的瓦片都震碎了。
- MCCB &MCB can be equipped for main switch and sub switch. 箱内可装主进线塑壳开关及分回路微断开关。
- Fortunately, no one was hurt when the gas main exploded. 当煤气总管爆炸时，幸好没人伤着。
- The heater is now ready for operation and the main switch can be closed. 然后这时热水器可以重新工作,可以重新打开电源开关。
- If you can't do it by yourself, you should call somebody to check the gas main. 如果你自己做不了，就应该叫别人来检查煤气总管道。
- Set the main switch selector to A and set the mode dial to normal mode. 把主选择开关设置在A（自动）,同时把模式盘设置在普通模式。
- Expansion joints of various kinds are fitted on gas mains. 各种各样的伸缩接头被安装在煤气的总管道上了。
- The tablet press is switched off at the main switch. 关闭压片主开关。
- Each unit should include a main switch and ammeter with a scale of about 20 ampere capacity. 每一套装置应包括一个主开关和电流表，电流表的刻度范围约20安培。
