上层通过用瓦楞铁、窗帘、空调和镜子包围三个空圆柱形成。
The upper floor is formed by wrapping three empty cylinders with corrugated iron, curtains, air and mirrors.
由于母线PT励磁特性的非线性，铁磁谐振频繁发生在中性点接地变电站的空母线上。
Ferroresonance due to the saturation of PT magnetizing characteristics is frequently reported to happen on the busbars of neutral grounded substations.
据《新京报》报道，全国至少32家机场正在筹划空铁联运。
At least 32 airports in China are planning to combine air transportation with high-speed railway transportation, the Beijing News reports.
据《新京报》报道，全国至少32家机场正在筹划空铁联运。
At least 32 airports in China are planning to combine air transportation with high-speed railway transportation, the Beijing News reports.
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