upper hook的意思|示意

The upper body also has two small, steel, hook-like claws to sink into a carpeted wall as the robot climbs.

它的上身由2个很小的铁制钩状爪子组成用于扎入毯覆盖的墙面使机器人爬行。

To do this feel for the bottom hook by hand and twist the upper hexagon until the bottom hook is locked.

为此，用手摸到底钩，然后转动六角体上部，直至底钩锁止。

The safety bearing capacity test shows that, the upper portion of the derrick is an area loaded heavily, and the measured stress on the derrick stand is linear to the hook load.

由井架安全承载试验结果可知：井架上段为受力较大部位；井架立柱测试应力与大钩作用载荷呈线性关系。