它们的主太阳能和稳定板安装在背部，直接位于主反应堆上方。
Their principal solar and stabilizer fin, mounted dorsally, is located directly above the main reactor.
针对虎门大桥，在断面中分别加入水平边稳定板、竖向边稳定板以及中央稳定板，形成三种添加气动稳定性措施的新断面模型。
Added horizontal stabilizer, vertical stabilizer and central stabilizer to the Humen bridge section respectively, to form three new models of cross-sections.
球形螺母，由顶头螺钉驱动的固定球形螺母，用于翻板和稳定器运动。
Ball nut, a fixed spherical nut driven by the jackscrew for flap and stabilizer movement.
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