一代一代

Some people say not as good as homework, but we are such a fresh step to do, and constantly co-ordination, from generation to generation, I do not know what to stop this dehumanizing occasions.

有人说做作业都不如，但大家就是如此迈劲的做，不断的配合，一代一代，不知何才能停止这样非人性化的场合。

No hungry generations tread thee down; The voice I hear this passing night was heard In ancient days by emperor and clown: Perhaps the selfsame song that found a path Through the sad heart of Ruth, when, sick for home, She stood in tears amid the alien corn; The same that oft-times hath Charmed magic casements, opening on the foam Of perilous seas, in faery lands forlorn.

一代一代，饥饿无法剥夺你的生命；这逝去的夜里我欣赏的歌喉，或许，拾穗度日的路得被这歌喉打动，站在异乡的田野悲痛不禁，思乡的泪水满脸纵横；常常，魔法禁锢的古堡被这啭唱感动

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。