It is used for pressure and vacuum of ammoniac liquid and gas as well as of zhe madia which can't corrode carbon steel, stainless steel and solders like tin and lead.
The shoe that with getting together ammoniac fat material makes a copy is footmark a kind of when in examining, often encounter newer shoe is planted.
以聚氨脂材料制底的鞋是足迹检验中经常碰到的一种较新鞋种。
The results demonstrate that the absorption rate can reach above 98% by adopting sulfuric acid to absorb ammoniac waste gas.
研究结果显示,采用硫酸吸收含氨尾气,吸收效率可达98%以上。
Biological denitrogenation technology, which removes more nitrogen from the original average processing by rate of 2% ammoniac nitrogen is narrated in aspects of theory, equipment and processes.