Version selection is the first base approach of teaching and play music production.
选择版本是教学、演奏作品的第一个基础步骤。
The selection of twist for weft is much important in design and production.
认为在设计和生产过程中，纬纱捻度的选择较为重要。
All products in the design, material selection, production, packaging, etc. are perfect.
所有产品在设计、选料、生产、包装等方面都做到尽善尽美。
The three key steps are: the theme selection, work production, project evaluations.
教学实践中关键三步是：主题选定、作品制作、成果评价。
The invention has simple structure, ingenious shape, economic material selection, simple production and wide application.
本发明结构简单，造型精巧，选材经济，制作简便，应用广泛。
The invention has simple structure, ingenious shape, economic material selection, simple production and wide application.
本发明结构简单，造型精巧，选材经济，制作简便，应用广泛。
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