1.
All rooms are linked to the main switchboard .
所有的房间都与主开关连接。
2.
Main Breaker A main breaker is a circuit breaker at the input or output of the bus, through which all of the bus power must flow.
主开关主开关是在母排输入或输出端的线路断路器，所有的电流都要从那通过。
3.
See Air Circuit Breaker, Main Breaker, Molded Case Circuit Breaker and Power Circuit Breaker.
（见空气线路断路器、主开关、塑壳线路断路器等）。
4.
master subswitch
校准用副转换开关, 主辅助开关
5.
host system mailbox switch setting
主系统信箱区开关设置
6.
Set the main switch selector to A (auto).
把主选择开关调至A（自动）。
7.
main circuit transfer switch for shed supply
主电路库用转换开关
8.
isolating switch for main silicon rectifier cubicle
主硅整流柜隔离开关
9.
Set the main switch selector to (L) lock to turn off the power.
把主选择开关转到l（锁定）,断开电源。
10.
Choice of Main Switch Electric Equipment of Lowvoltage Switchgear;
低压抽出式开关柜主电路开关电器的选用
11.
Switchgear mainly includes circuit breaker, disconnecting switch, load-break switch and fuse.
开关装置主要包括断路器、隔离开关、负荷开关和熔断器。
12.
frequency master control instrument for synchronous clocks or time switches
频率主控仪表,用于同步时钟或时开关
13.
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）
14.
Set the main switch selector to the desired operation.
设置主选择开关在所需的操作状态
15.
Switch Rooms: A room containing the main electrical switchboard.
开关转换室: 装有主配电盘的房间
16.
The hostess cut up the cake and gave everybody a slice.
女主人把蛋糕切开关分给每人一片。
17.
switching angle
(Q开关的) 开关角
18.
Set the flash unit to "A" and set the main switch selector to A (auto).
将闪光灯设置在A并将主选择开关调至A（自动）