Qhov tseem ceeb ntawm cov tsheb nrau av ntu

HNIAV cov txiv neej thiab cov hniav hluav taws xob: Cov khoom siv no tuaj rau hauv av thiab ua lub luag haujlwm rau thawb thiab tu, featuring siab ua kom tsis kam thiab lub zog.

Cov ciav hlau thiab cov saw: Ua kom cov ruaj khov thiab kev tawm tsam thiab cov khoom siv ntawm cov chaw sib txawv, thiab txuas lub neej pabcuam ntawm cov khoom siv.

Cheebtsam hydraulic: xws li lub tshuab ua khoom ua haujlwm thiab cov twj ua si hydraulic, ua kom cov khoom siv ua haujlwm yooj yim thiab nrawm.