Their Aw property added in water is investigated and the proportion for the compound phosphate ester is optimized by means of four - ball tester.
利用四球试验机考察了添加到水溶液中的抗磨性能，并优化了复合磷酸酯的配比。
This invention relates to a raw material of metallurgy of steel-melting, especially a compound iron ball for steel-melting and its facture.
本发明涉及一种冶金工业炼钢生产使用的原料领域，特别是一种炼钢用复合铁球及其生产工艺。
The main product is: the warp knitting cloth, the weft knitting cloth, the sandwich netting, the high ball to netting, SBR the compound materials, to spread model products and so on material.
主要产品为：经编布、纬编布、三明治网布、高弹网布、SBR复合材料、涂塑材料等产品。
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