In 1992, these renovations outstripped new construction, with 571 additions and alterations reported.1992年更新改造已超过新建, 据报告增加面积和改造的有571家.In the mid-eighteenth century the production of food far outstripped the rise in popul...
Boride series of main products: boric acid, borax, and so on.硼化物系列主要产品有: 硼酸 、 硼砂等.It was investigated that chromizing in borax salt bath and melting hydrochloride.研究了硼砂盐浴渗铬和氯系熔盐渗铬.Borax is the compound commonly applied t...