当需要对面板进行维修时，将面板翻起，用支杆将面板支起，防止其滑落，然后即可进行电路仪表元件的检测维修和更换。
When the panel needs maintaining, the panel is turned up and is supported by the support rod so as not to slide off, and then the circuit instrument elements can be detected, maintained and replaced.
哈勃望远镜的工作寿命一而再地得到了延长，航天飞机宇航员也完成了5次维修任务。他们不仅修复了出故障的元件，而且为仪器升了级，给仪表更换了电池。
Hubble's life has been extended time and again through five servicing missions in which space shuttle astronauts have fixed faulty components, upgraded instrumentation and replaced batteries.
GOCE及其传感器、仪表支持系统和控制元件，实际上构成了一个单一的综合重力测量装置。
GOCE, with its sensor, system of supporting instrumentation and control elements, actually forms a single composite gravity-measuring device.
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