A method of producing crystal sodium fluoride with sodium fluosilicate and sodium carbonate is introduced.本文介绍了以氟硅酸钠、纯碱为原料生产晶体氟化钠的工艺,并对操作条件作了详细的说明.Compositions, crystallization mechanisms and properties of the fluosilica...
Francine worked her way out of Julian's grasp.弗朗辛从朱利安搂她的胳膊中挣脱出来."Are you all right?" Francine asked as she breezed in with the mail.“你没事吧?”芙朗辛拿着邮件踱步走进来,问道。'Are you all right?' Francine asked as she breezed...
建立了砂轮的球基渐开螺旋面方程和分度球面螺旋线方程,给出螺旋运动参数、螺旋线导程.The mechanism of grinding internal gear of spherical worm emery - wheel is researched.正圆锥螺旋面是正圆柱螺旋面被同轴正圆锥面截得.The ortho cone helicoid was used interrsect intercept by the ortho con...
这个故事是怎么结尾的?How does the story end up?注意在最后一栏中以es结尾的单词.Note the es ending on the words in the last column.那句话结尾的词意思是什么?What's the meaning of the word that terminates the sentence?...