Concrete introduction welder the theories teaching of the craft lesson way of thinking.
具体介绍焊工工艺课的理论教学思路。
The paper gives a brief introduction to the shafting coupling design and its features for a fast attack craft.
本文简要介绍了轴系联轴器的设计及其特点。
The introduction of new fabrics, accessories and craft, the structure of the fabric, texture, color, pattern and other requirements are also higher.
采用新的面料、辅料和工艺，对织物的结构、质地、色彩、花型等要求也较高。
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