News perspective mainly contains approach, material selecting and expression analyzed from the news body.

从新闻主体方面分析，新闻角度主要包括立意角度、选材角度和表现角度。

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So the theoretical basis is provided for optimizing achromatism of the rhomb-type retarder and the material selecting scope can be extended.

从而为优化菱体型相位延迟器的消色差性，扩大材料的选取范围提供理论指导。

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An introduction is made to the elastic velvet with coarse and fine wales, including its raw material selecting, knitting, shearing, dyeing and setting.

介绍了弹力子母条天鹅绒产品的原料选择、编织、剪毛、染色及定形等各道关键工序工艺要求及技术要点。

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An additional innovation of this programme is the design of context-based materials by a multidisciplinary team including educators and designers who are in charge of writing the content, selecting material, editing and producing the multimedia resources.

UNESCO: Sistema Interactivo Transformemos Educando