教学地图

On the basis of actual difference between longitude and latitude,the nine basic-scale topographic map numberings are calculated by formulas in the paper, and then the traditional graphical method continued from the past in survey teaching would be replaced by the formula method.

按经纬差划分为：l：100万、1：50万、1，20万、1，10万、1：6万、l：2.5万、1：1万、l；5千、1：2干等9种规格。多年来，在《地形测量规范》，《测量学》、《地形测量学》等测量书籍中，一直没有完整统一的公式计算图幅编号，码沿袭传统的几何作图法，逐级推算求得。给教学、生产、地图管理和应用等方面带来不便，不能适应计算技术发展的需要。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。