|
in general type and size of socket for lamps to be as follows
but the socket for fluorescent lamp to be of bin type (spring type)
name type size
lighting fixture 250w and over edison 40
250w and below edison 27
mercury lamp DO. DO.
em'cy lamp DO. DO.
看不懂这是什么意思?
还有就是那个强光灯用于甲板照明和机舱照明,以及船尾作业区照明有什么不同?为什么有时用钠灯,有时用汞灯呢?它们的启动电路和应用场合有什么不同?
请高手指导一下 |
|