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1·Chemical precipitation of phosphorus removal methods still need to be used.

磷的去除尚需化学沉淀的方法得以实现。

2·Fe3O4 was prepared by using chemical precipitation in dealing with chromium residue simultaneously.

利用化学共沉淀法，在处理铬渣的同时，制备四氧化三铁。

3·The chemical precipitation method is feasible for extending the life of electroless nickel plating solution.

采用化学沉淀法延长化学镀镍液寿命是切实可行的。

4·Nanometer sized lead oxide was prepared by pyrogenetic decomposition of lead carbonate synthesized by chemical precipitation.

采用均匀沉淀法合成碳酸铅，在此基础上通过高温分解制备纳米氧化铅。

5·Chemical precipitation-advanced oxidation process was used to remove sulfide and organics from waste alkali in ethylene cracking.

采用均相化学催化氧化技术对乙烯裂解废碱液进行了处理，考察了影响处理效果的各种因素。

6·Mono-surer dispersed 8-quinolinol copper(QC) nano-powder is obtained by recrystallizing the QC powder prepared by chemical precipitation.

采用适当的溶剂对化学沉淀法制备的8-羟基喹啉铜进行重结晶，得到了疏松的8-羟基喹啉铜纳米粉体。

7·The glue machine is equipped with automatic recycle system, which helps control the quantity of pastes and avoids chemical precipitation;

自动循环供浆，能有效控制供浆量，避免浆液沉淀；

8·Silicon oxide nanoparticle are prepared by chemical precipitation process, with sodium metasilicate and hydrochloric acid as raw material.

以工业硅酸钠和盐酸为原料，采用化学沉淀法制备出纳米二氧化硅。

9·In this paper, hydroxyapatite powders and porous hydroxyapatite blocks were synthesised by chemical precipitation and hydrothermal method.

本文主要采用化学沉淀法和水热法合成羟基磷灰石粉体及多孔羟基磷灰石块体。

10·Based on fundamental of chemical precipitation, the superfine manganese sulfide was prepared by designed different technologies and conditions.

本文基于化学反应沉淀法的基本原理，通过设计不同的工艺路线和工艺条件制备硫化锰微细粉末。