重点介绍了按金相组织分类的贝氏体、马氏体类合金结构钢和铁素体、马氏体、奥氏体类不锈钢合金焊丝的生产工艺。
It mainly introduces the production processes of alloy structural steel welding wires of bainite and martensite and stainless steel welding wires of ferrite, martensite and austenite.
其中基础类包是应用类包和组合类包的基础，它用点、线、面、体、复杂对象和关系类等基本的要素表示三维空间。
The base package including point class, line class, area class, volume class, complex object class and relation class, is the base of the application package and the combination package.
出芽短梗霉是一类类酵母真菌，具有酵母样和真菌菌丝体两种形态。
Aureobacidium pullulans is a species of yeast-like fungus, which has both yeast-like and mycelium forms.
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