谁告诉你的?光效率约15%?
所有跟帖:
• 15%?那是白炽灯的效率,LED不可能这么低。 -九叔- ♂ (0 bytes) () 10/09/2017 postreply 06:58:46
• 15%?那是白炽灯的效率,LED不可能这么低。 -九叔- ♂ (0 bytes) () 10/09/2017 postreply 06:58:46
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2024 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy