金属灰

In single floors, the joists can also be utilized to carry either plasterboard, timber boarding, expanded metal lathing and plaster or other material for the ceiling of the room below, besides bearing the floor boards.

在单层楼板里，除承载楼板之外，支承梁还可用来承受下面天棚的石膏板、木板、膨胀金属板条、灰泥或其它材料等的荷载等。

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。