According to the guide type of the pole, the observation pole now used to monitor the ground settlement in Shanghai has two kinds of structure, i. e. cable guide and guide wheel.
目前监测上海市地面沉降的观测标按照标杆导正方式进行划分，主要有两种结构即钢丝绳导正式和导轮扶正式。
It is constructed as double pressing type and has two sets of charging device and two pressing wheel.
其结构为双压式，有两套加料装置和两套压轮。
A new type of pipeline-shaped wheel-legged lunar exploration robot (PWLER), which comprises of two robot parts, is presented.
提出了一种由两个机器人单元组成的管道形、轮腿式月球探测机器人(PWLER)。
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