recommendatory

recommendatory的英语例句

1. National standards and trade standards are divided into compulsory standards and recommendatory standards.

   国家标准、行业标准分为强制性标准和推荐性标准.

2. The recommendatory principle and method by the authors are also adapted to high speed train.

   作者提出的列车质量计算的原则和方法也适用于高速列车.