pack assembly造句

• Specification for stuffing tubes , nylon ; and packing assemblies metric
  填料管尼龙和包装配件规范
• The solution of fixed setting assembly dimension chain based on packed assembly
  的思路解固定调整法装配尺寸链
• Standard specification for stuffing tubes , nylon , and packing assemblies metric
  填料管尼龙和包装配件的标准规范
• In allusion to the leaking of packing of gate valve , this paper presents technical improvement measures in properly selecting packing material and varying the structure of packing assembly
  摘要针对闸阀阀杆填料密封泄漏的问题，提出了正确选择密封填料的材料和改进闸阀填料压盖密封件结构的技术改进措施。