A method for chemical phase analysis of free silica in limestone was discussed in this paper.
介绍了石灰岩中游离二氧化硅的化学物相分析方法。
The application of the high dispersive gel-free silica in the tread compound was investigated and compared to the conventional precipitated silica.
研究高分散无凝胶白炭黑在轮胎胎面胶中的应用，并与普通沉淀法白炭黑进行对比。
Basic principle, experiment condition, operating process, method and steps of X-ray diffraction method to determine free silica content of respirable dust in mines are introduced in this paper.
本文介绍了应用X射线衍射仪测定矿山呼吸性粉尘中游离二氧化硅含量的基本原理、实验条件以及操作过程、方法步骤等。
The mechanism of fibrosis caused by free silica particles involves a lot of cells and reactions including inflammatory reaction, immunological reaction, foreign body reaction and cell toxic action.
游离二氧化硅致肺组织纤维化机制十分复杂，涉及多种细胞及生物活性物质参与的炎症反应、免疫反应、异物反应、细胞毒作用等。
Heating husks to 800 degrees centigrade (1,472 degrees Fahrenheit) in an oxygen-free furnace drives off carbon, leaving fine particles of nearly pure silica behind.
在无氧炉中将糠皮加热到800摄氏度(1472华氏度)将分离糠皮中的碳，留下几乎只含有硅的细小微粒。
Heating husks to 800 degrees centigrade (1, 472 degrees Fahrenheit) in an oxygen-free furnace drives off carbon, leaving fine particles of nearly pure silica behind.
在无氧炉中将糠皮加热到800摄氏度(1472华氏度)将分离糠皮中的碳，留下几乎只含有硅的细小微粒。
Tom's of Maine Fluoride-Free Children's Toothpaste uses naturally sourced calcium and silica abrasives to gently clean teeth.
汤姆的缅因州无氟儿童牙膏的使用自然来源的钙和二氧化硅磨料，轻轻地清洁牙齿。
The free hydroxyl ion is involved in a further reaction with the silica network.
游离的氢氧离子会进一步和硅氧网路反应。
The free hydroxyl ion is involved in a further reaction with the silica network.
游离的氢氧离子会进一步和硅氧网路反应。
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