接触式灯脚
迷你型
The two-and-a-half-year pilot, called LightSavers, tested 533 LED lamps in 15 trials in 12 cities, including New York, London, Hong Kong, Toronto, and Sydney.
FORBES: Global Trial Shows LED Street Lighting Delivers Up To 85% Energy Savings
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。