- Through rationally designing ingate /riser system and effectively using the lunkerite proportion, shrinkage hole and low production yield were eliminated effectively.
缩孔和钢水利用率偏低是目前精铸行业普遍存在和急需解决的问题。
声明：以上例句、词性分类均由互联网资源自动生成，未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。