This paper presents parameter optimization of double-table turning structure, determination of trailer's draw bar length and hook positions of both the trailer and tractor.

详细介绍了双转盘转向结构的参数优化方法、平板拖车牵引杆长度及挂钩位置确定方法、牵引车挂钩位置确定方法，并对产生跟随性误差的原因进行了分析。

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Mr Heathcliff sat at a table, turning over some papers in his pocket-book; but he rose when I appeared, asked me how I did, quite friendly, and offered me a chair.

希刺克厉夫坐在桌旁，翻阅他的袖珍记事册中的纸张；可是当我出现时，他站起来了，很友好地问候我，还请我坐下。

youdao

Mr Heathcliff sat at a table, turning over some papers in his pocket-book; but he rose when I appeared, asked me how I did, quite friendly, and offered me a chair.

希刺克厉夫坐在桌旁，翻阅他的袖珍记事册中的纸张；可是当我出现时，他站起来了，很友好地问候我，还请我坐下。

youdao