Ruian dongjia machinery factory is a special enterprise manufacturing packing box slotting machine up and bottom cover assembly line.
瑞安东佳机械厂，是一家专业生产包装盒开槽机、地盖制盒流水线的厂家。
Describe the problem of the traditional packing box in field application, and the structure and virtue of auxiliary stripping assembly of stem packing to the question.
阐述了常规阀门填料函在现场应用中存在的问题，以及针对此问题改进设计的填料辅助拆卸装置的结构、特点。
Ruian Dongjia Machinery Factory is a special enterprise manufacturing packing Box Slotting Machine, Up and Bottom Cover Assembly Line.
瑞安东佳机械厂，是一家专业生产包装盒开槽机、地盖制盒流水线的厂家。
To prefabricate box-girder is important in concrete cable-stayed bridge construction, it affects directly the main bridge construction of assembly progress and packing accuracy.
箱梁的预制是钢筋混凝土斜拉桥施工中的重要环节，它直接影响到主桥施工的吊装进度和拼装精度。
To prefabricate box-girder is important in concrete cable-stayed bridge construction, it affects directly the main bridge construction of assembly progress and packing accuracy.
箱梁的预制是钢筋混凝土斜拉桥施工中的重要环节，它直接影响到主桥施工的吊装进度和拼装精度。
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