【判断题】循环球式转向器有两级传动副,第一级是循环球,第二级是齿条一齿扇传动副。
【单选题】There is here a very fine display of weapons and armor , pottery, miniatures and sculptures.
【简答题】循环球式转向器第一级传动副是();螺母的下平面加工成齿条,与齿扇轴内侧的齿扇相啮合,构成()第二级传动副。
【简答题】循环球式转向器: 循环球式转向器中有两级传动副,第一级是 传动副,第二级是 传动副
【简答题】Hello,everyone. My name is Tina. I am an Australian girl , but now I live in Dalian. It’s a beautiful city in China. It’s near the sea. Every year, many people come here to enjoy the beautiful sea. O...
【单选题】Hello,everyone. My name is Tina. I am an Australian girl , but now I live in Dalian. It’s a beautiful city in China. It’s near the sea. Every year, many people come here to enjoy the beautiful sea. Ou...