铬矿砂

本月，两国签署了多份基础设施和贸易合作协议。据两国媒体报道，根据这些协议，中国企业将投资于伊朗的一些大型基础设施项目，而伊朗将向中国出口大量铬矿砂。

The two countries this month signed several infrastructure and trade collaboration agreements that would see Chinese companies invest in big infrastructure projects in Iran , while Iran would export large quantities of chrome ore to China , according to local reports .

选用碱性树脂铬矿砂生产出合格的叶轮。

Alkaline resin chromite sand is used to produce qualified impeller casting .

加入镁铝尖晶石的镁质浇注料在强度方面要好于加入铬矿砂的；

The strength of castable containing MA spinel was better than that of the one contaning chrome ore.

氮化硅加入量对镁质浇注料力学性能的影响（2）加入镁铝尖晶石的镁质浇注料在强度方面要好于加入铬矿砂的；

EFFECTS OF Si_3N_4 ADDITION ON MECHANICAL PROPERTIES OF MgO-BASED CASTABLES ( 2 ) The strength of castable containing MA spinel was better than that of the one contaning chrome ore.

镁质复合滑板材料与铝锆碳滑板材料性能比较（2）加入镁铝尖晶石的镁质浇注料在强度方面要好于加入铬矿砂的；

Performance comparison of magnesium compound side gate and Al_2O_3-ZrO_2-C side gate ( 2 ) The strength of castable containing MA spinel was better than that of the one contaning chrome ore.