白炭黑
Ventilating system improvement of silica hydrated workshop in Jiaozuo Cryolite Factory
焦作冰晶石厂白炭黑车间通风系统改造
The colloidal particle is the polycondensate of hydrated silica gel acid, belongs to a non-crystalline-state substance.
是具有固体特性的胶态体系,由形成凝集结构的胶体粒子构成.
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