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In order to ensure the production of much-needed customers, our long-term off-the-shelf equipment and related maintenance HPLC accessories.

为保证广大用户的生产急需，我们长期现货供应HPLC仪器及相关维修配件。

In off-the-shelf industrial clusters based on the scale of development has encountered a bottleneck.

产业集群在现成规模化基础上也遇到了发展的瓶颈。

They have used off-the-shelf technology for the hardware as much as possible, and focused more development onto image recognition and analysis software.

他们用小康-现成的技术硬件，尽可能多地，并集中更多的发展上的图像识别和分析软件。

The Control Computer is an off-the-shelf unit than can be obtained directly or from PSI.

控制计算机是可以从本公司获得的现成的单位。

That's in part because the researchers used off-the-shelf enzymes and have not optimized the system, Zhang says.

Zhang教授认为部分原因是因为研究人员采用的是货架酶，而且还没有对系统进行优化。

I like all the books on the shelf but this one is my favorite .

我喜欢书架上所有的书，但这本是我最喜欢的。

No matter which book you need,it's on the bottom shelf.

不管你需要的是哪本书，它都在书架的最底层。

The book is on the bottom shelf.

那本书在架子的最下面一层。

There is still one on the shelf.

好的。还有一本在书架上。

Do you know I have put your book on the shelf?

你知道我已把你的书放在书架上了吗？

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。