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Tỷ kèo nhà cái 5Ȼͷľ棬ԭϵУľȴͶͥһԱͽ˵ʱͥЩв֮ĵIJ䣬Ҳټʱò˶ãЩԼͻֶԿͥԣɫǵͨ죬ŭһҾԶƣ;սȵһǣȲƽϣѰճ֮Ͷ˹趣ʱɳΪɽˣȻһЩȻʶȻҲǴǸʱʼ۵㡣
~峤һ˵Ըͻæ
ܼһ߳ԴҪ֪ΧɶС䣬µ˿ڣ˵ҲʮȻΧЩСΪӹӲûȥԮҲ˵һ̳ʱ䲢ЩԮϵʱѾˡϲIJ£ʱʱͷ쾭һսڿͷʱ¾ȸ±ܡȥֹͻĽݫذϼ۾һսսʱָʱɾ͡Ǿ㣬10Wɾ͵100W츳˺սʱսսʿ20%һdzɳһΣͬʱһ棬ɽκһ£ýʣһһǣʲôҪ£뺫֮¾Ц
ηҷҳdzأһʵУǺȻеһɺð𣬶ϴٵϸ룬æתһɨԬƽһŭŽĿ⿴ˣijԱնɱʹ춯ֵ֮ʱ֪˿ΪŹ˰ž䣬ĿȻ֪ʲôȻϺȣֲҹȻɫ粻Ľԭء