英语语法分析

QZ company is an enterprise being mainly engaged in the Fettling and Trimming Equipments products.

QZ公司是一家生产清理设备为主的企业。

While the shakeout machine finishes the shaking out procedure, barrel type shakeout machine also complete the fettling process.

落砂机完成落砂过程，滚筒式落砂机同时对铸件达到清理目的。

It is an effective way of eliminating the occurrence of silicosis in fettling workers by substituting silica with limestone as molding material in steel casting factory.

铸钢工艺中采用石灰石砂代替石英砂是一种有效的消除清砂工矽肺的措施。