帮忙把这几句话翻译一下，多谢了。不要电脑翻得，用电脑翻得就不要回了。

Question

论文在介绍了电梯的机械和电气两大部分的结构原理的基础上，分析设计了基于交流双速电机电梯系统的拖动系统电路，拖动系统电路能够实现电机正反转、快慢速运行、多级调速起动停止功能，并有过载保护、限位保护和相序保护等。
本设计实现了基于西门子PLC S7-200的电梯全集选控制系统。根据集选电梯需要实现的功能确定了PLC控制程序的流程、PLC输入输出点数的分配和PLC相关的外围电路，并确定了所需相关元器件的选型。再根据集选电梯的控制要求，完成了PLC梯形图的设计，最终实现了电梯全集选控制系统。仿真结果验证了所设计的控制系统满足了集选电梯的功能。

Answer 1

Thesis presentation of elevators on the basis of principles of mechanical and electrical structures of the two most, analysis and design of the elevator system based on AC dual speed motor drive system circuit, drag system circuit to achieve a running motor rotating speed, speed, multistage speed start stop function, and overload protection, limit protection and phase-sequence protection and so on.
Design and realization of the complete works of elevator control system based on Siemens PLC S7-200. Under set selected elevator needed to implement function of PLC control of the process, of PLC input/output points distribution and related peripheral circuit of PLC, and identified the relevant components of the selection you want. According to the sets selection elevator control requirements, completed the design of PLC ladder diagram, ultimately, the complete works of elevator control system. Simulation results verify that the selected elevator control system designed to meet the set function.

Answer 2

The paper introduced the elevator mechanical and electrical two most of the structure based on the principle of design, analysed based on the exchange double speed motor drive system circuit of the system, drag system can realize motor circuit positive &negative, slow speed operation, multistage speed stop function, and starting a overload protection, limit protection and sequence protection, etc.
This design is realized based on Siemens s7-200 PLC of elevator control system works selected. According to set selection elevator need to determine the function of the realization of the PLC control program flow, the PLC input/output to the points of distribution and PLC related peripheral circuit, and ascertain the related components needed for the selection. Again according to the control requirements of set selection elevator, completed the ladder diagram design, PLC finally achieved complete elevator control system. Choose The simulation results show the design of the control system to satisfy the sets selection elevator function.