primary jaw crusher

例句：

1. 1. This is a primary jaw crusher used for crushing rocks.
   这是一台用于破碎岩石的初级颚式破碎机。
2. 2. The primary jaw crusher is the first stage of the crushing process.
   初级颚式破碎机是破碎过程的第一个阶段。
3. 3.The primary jaw crusher is essential in the initial stages of the ore processing industry.
   初级颚式破碎机在矿石加工行业的初始阶段至关重要。