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[VOA慢速-科学报道] VOA慢速英语(翻译+字幕+讲解):对鸟类无害的风力发电机
这种涡旋发电机的发电量比有叶片的风力发电机少30%,但重量更轻,建造和维护成本也更低,主要是由塑料制成,所以运转部件很少,这种发电机也不会产生噪音。2015-07-22 编辑:Sunny
Severity: Notice
Message: Memcache::connect(): Server 127.0.0.1 (tcp 11211, udp 0) failed with: Connection refused (111)
Filename: libraries/Cache_file.php
Line Number: 28
Severity: Warning
Message: Memcache::connect(): Can't connect to 127.0.0.1:11211, Connection refused (111)
Filename: libraries/Cache_file.php
Line Number: 28
2015-07-22 编辑:Sunny