Guangzhou Ouweike Metal is a leading manufacturer of retractable seat with railings.
广州欧维克金属制品厂是行业领先的伸缩带栏杆座生产厂家。
A 20,000-seat arena with a retractable roof is planned.
一个可容纳2万名观众、带伸缩顶棚的竞技场正在规划中。
Lange's Antares 20e is a single-seat glider with a retractable propeller powered by a 40kw electric motor and 72 lithium-ion cells mounted in the leading edges of its wings.
Lange的Antares 20e是单座可带伸缩螺旋桨式滑翔机，由40千瓦电动机驱动，并在机翼前缘装有72个锂电池。
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