"What's going on here?" he asked himself, turning on his headlights and shifting his 40-ton semi to a lower gear.
“发生了什么？”他问自己，随后打开他的车头灯，把40吨重的半挂车的档位调的低些。
Place unit on turning gear and observe for leaks, rubs, and control deficiencies.
放在回转装置的单位，并观察有无泄漏，磨，和控制的缺陷。
Place unit on turning gear and observe for leaks, rubs, and control deficiencies.
放在回转装置的单位，并观察有无泄漏，磨，和控制的缺陷。
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