查询词典 keep

In learning to swim, it is important to keep your head above water.

学游泳，重要的是要把头伸出水面。

If you can keep your head above water, you won't drown.

如果能让头露出水面，你就不会被淹死。

We are aboveboard no matter what things we do,never keep it secret.

做任何事，我们都是光明正大的，从不偷偷摸摸。

The circumstance that although this announcement lets Sai Di,vigorously of medium share price rises somewhat keep within limits, but market enthusiasm is not abreaction however.

虽然这个公告让赛迪传媒股价猛力上涨的情况有所遏制，但市场热情却并未消散。

I'd like to keep abreast of your daily life.

我想多了解了解你的生活！

We must keep abreast of the latest development in this field .

我们要及时了解这一领域的最新发展。

I want to keep you abreast of the changes in my career.

我想你亲眼见证我人生的改变。

It seems very difficult for people over 50 to keep abreast of the rapid developments of science and technology.

50岁以上的人要跟得上科技的发展，看来已经是很难的了。

It's important to keep abreast of changes in the market.

了解自己的市场价值认识它的重要性，以跟上市场的变化。

I will do my best to keep you guys abreast of upcoming projects.

我会尽我所能的跟大家报告我的新工作。

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。