I'm just curious why you didn't put QJ (the nuts) in his range.
只是有一点我很好奇,为什么您没有把QJ(这手牌的坚果)放进他的范围里?
In the 1950s the Chinese modeled the first QJ off American designs obtained by the Russians.
1950年代,中国从苏联人那里得到图纸,仿照美国的设计制造了第一台蒸汽机车。
Flotation reagents is ammonium sulfate, sodium hexametaphosphate, copper sulfate, xanthate collectors BD, frothers QJ.
浮选药剂为硫酸铵、六偏磷酸钠、硫酸铜、黄药类捕收剂BD、起泡qj。
应用推荐