查询词典 necessary

Keep on the development of the air condition, it is necessary to carry on the innovation .

为了使空调行业走可持续发展的道路，有必要对其技术进行创新。

It is necessary to remind users to participate in similar activities on the alert to protect their property.

有必要提醒参加类似活动的网友，提高警惕，保护好自己的财产。

When it comes to running a business, much of the necessary focus is on the bottom line.

当谈到做生意，有许多必要的工作重点是谈判的底线。

On the road, it is necessary to avoid the vehicle "crimes."

道路上，这是必要的，以避免车辆"的罪行。"

It's necessary to stick labels on the bag and box.

在提包和箱子上贴标签是必要的。

It is necessary to stick lable on the handbag and suitcase.

在提包和箱子上贴标签是必要的。

Because of introduction error vector, the network run on-line mode, the error vector become an tools to regulate network effect, the training process will be doing during any permit time, it is not necessary to train on-line at any time.

由于误差向量的作用，使网络在线运行时，误差向量作为调节网络整体行为的重要手段，达到真正实时运行的目的。

Electric fuel pump can not disassembled after assembly and it neednt servicing, so effective on-line quality testing is very necessary.

组装好的电动燃油泵，是一个不可拆卸的总成，一般不进行维修，故在燃油泵装配生产过程中对其进行有效的质量检测就尤为重要。

I think that the on-site training will be necessary for the tank.

我想槽罐焊接工作的现场培训是必要的。

Both of them are absolutely necessary in on-the-spot investigation ,serving the realization of effective field inspection.

两者是实地勘验必不可少的手段，都是为实现有效的现场勘验服务的。

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。