riser

1.late risers always exasperate early risers.

迟起的总是惹怒早起的。

2.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。