The high purity of the chemical composition, thus the ingredient of the product and surface quality from pollution.
化学成份的高纯性，从而使产品的成份和表面质量不受污染。
The chemical composition, microstructure and phase ingredient of the sediment in the sub-header of WGZ410/9.8-15 boiler are measured.
对WGZ410/9.8 15锅炉下联箱的沉积块状物的化学成分、显微组织和物相组成进行了检测。
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