the gas lamp gradually lost ground to electric lighting.
煤气灯逐渐为电灯所代替。
strong exhaust devices improve and gas lamp parts and long service life.
强排风装置,提高灯管及气件的使用寿命长。
most of the shops lighted two hours before their time-as the gas lamp seems to know for it has a haggard and unwilling look.
大多数的店铺都比平时提前两个钟头掌灯--煤气灯似乎知道这一点,它们那副面孔显得又憔悴又不情愿。
the gas lamp blew out.
煤气灯吹灭了。
hid xenon gas lamp must operate under constant power supplying. normally it is realized with power error detecting loop.
hid氙气灯必须工作在恒定功率条件下,通常采用功率误差检测环路来实现。