preparation cost meaning in Chinese

准备工作费

By contrast the traditional zinc oxide catalyst and from the point of preparation cost , we decide use sulfuric acid activated solid superacid as synthesis catalyst
从催化剂效率和成本的综合因素考虑，对比传统的催化剂氧化锌，本文提出了使用硫酸促进的氧化物固体超强酸作为合成反应的催化剂。
In this paper tio2 / minerals have been prepared using natural minerals as carrier and the industrial metatitanic acid and the industrial sulfate titanium liquid as the raw material based on the effects such as loading capacity of tio2 , specific surface area of minerals , different mineral source and preparation cost . the acid treatment and heat treatment of minerals , preparation methods and condition of ticvminerals have been studied , the photocatalytic experiments on samples were tested from degrading methylene blue solution , and some important results as follows : 1
本研究以天然矿物对tio _ 2的负载能力、比表面积、矿物来源、材料成本等因素为依据，通过对天然矿石载体的活化工艺研究和工业偏钛酸、工业硫酸钛液(以下简称浓钛液)为原料制取tio _ 2天然矿物复合材料的制备工艺研究，以及样品光催化降解有机物的研究，最终制得了具有光催化活性的tio _ 2天然矿物复合材料。