At last, we emphasized attentive points and rules abided of applying food additives.
文章着重强调了采用食品添加剂的注意事项和应遵守的法规。
PVC production process by calcium carbide method and calcium carbide production present status in domestic were narrated. Key attentive points in PVC production were emphatically pointed.
叙述了电石法pvc的生产工艺及目前国内电石生产的现状，着重指出电石法生产pvc工艺中需要重视的要点。
This paper analyses accident cause for steam pipe on Wudang Road and points out some attentive questions to extend as far as pipe engineering.
本文对采用直埋敷设方式的武当山路蒸气支管事故调查和原因进行了分析，提出了应用该技术需注意的问题。
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