ZS series vibration sieve is suitable for in line production. It is an ideal device for granule that has uneven size to sieve continuously.
ZS系列分层筛适用于流水作业，是大小颗粒比例不等过筛连续出料的理想设备。
2
Through the corresponding between integral coefficient polynomial and rational number, this paper obtains factorization from factorization of polynomial by the way of sieve in true fraction series.
本文利用整系数多项式与正有理数的对应，将多项式因式分解通过对真分数序列筛选的办法求得因式。
3
SJ series of massive molecular sieve desiccants are widely used in air conditioners, refrigerators refrigeration systems.