natl. 基本例句 =nat'l This type of mechanical- strain situation is not examined by the Natl. Assn. of Corrosion Engineers NACE when preparing its list of recommended materials for sour serviceability. 当准备含硫作业能力材料推荐列表时，这种机械应变情况的类型不会被 NACE检查。 blog.sina.com.cn