preventive

• Judging criteria of preventive effect on kashin - beck disease
  大骨节病防制效果判定
• The preventive technique for the soil diseases of vegetables
  蔬菜土壤病害预防技术
• Analysis of preventive measures of concrete cracks
  混凝土构件裂缝的分析及防治措施
• Rust preventive oils and greases . test method of removability
  防锈油脂除膜性试验法
• Food chemical pollution and their preventive tactics
  食品化学污染及其防治策略
• Ability to perform routine preventive maintenance
  具备完成例行的预防性维护。
• General rule for corrosion preventive packaging method
  防锈包装方法的通用规则
• What are the preventive measures against dengue fever
  有甚么方法可以预防登革热？
• Rust preventive oils - test method of salt water immersion
  防锈油盐水浸渍试验法
• The preventive countermeasures of unhealthy literature
  对不健康文献的防范对策