它们的腿有点弯曲，脚尖上有小钩，提供足够的摩擦力，使它们能在湿滑的环境中活动。
The legs, which are slightly curved with tiny hooks on the tips of their feet to provide enough friction to enable movement in a slippery environment.
转向离合器为湿式、多片粉末冶金摩擦片、弹簧压紧、液压分离。制动器为湿式、浮动、双向带式、脚踏式机械操纵。
Steering clutch: multiple-disc oil powder metallurgy disc compressed by spring. hydraulic operated. brake is oil two direction floating band brake operated by mechanical foot pedal.
结果表明，对于上述三种气体，干燥时的摩擦系数小而磨损量大，加湿时的摩擦系数大而磨损量小。
The results show that for these gases, the friction coefficients are lower and the wear quantities are higher in dry gases than those of in moist gases.
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