... 弹簧减震器 Spring shock absorbers 氮气弹簧 Nitrogen spring 弹簧式安全阀 Spring type safety valve ...
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nitrogen spring pipeline system 氮气弹簧管路系统
fall-and-spring-applied nitrogen fertilizers 秋季和春季施氮肥
nitrogen gas spring 氮气弹簧
spring watering and nitrogen-dressing 春季肥水
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The application of nitrogen spring on cool punching die is introduced, and the elastic components such as 'heavy-load used polyurethane' components is briefly stated.
前言： 介绍氮气弹簧在冷冲模中的应用，另外还简单介绍了“高负载用聚氨酯”组件等弹性元件。
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