专业加工木结构产品的金属连接件,齿板.We specialize in metal connecting piece and dental plate for timberwork.本文通过分析双腔颚式破碎机结构特点,推导了齿板固定点的轨迹方程.The paper analyze structure peculiarity of the double - cavity jaw crusher.介绍了领式破碎机弧形齿板的外形结构 、 制造...
She was afraid in a way that was quite new to her.她感到从未有过的害怕。The new system is still in the planning stages.新体系仍处于规划阶段。I spent lots of money on smart new outfits for work.我花大笔钱购置了上班时穿的漂亮新套装。...