此外木材等级分类系统是在2006年，两国就软木材发生争议时，经过双方的同意而建立的。

Furthermore, the system for grading timber was agreed on by the two countries in 2006, when they settled their previous spat over softwood lumber.

youdao

本文评介了赫尔大学系统教育的等级分类，以及指导制订系统教育教学大纲的原理、实践和哲学。

This paper reviews the classification of degrees of systems education at the university of Hull, the principle, practice and philosophy dominating the teaching pro-gram of systems education.

youdao

本文评介了赫尔大学系统教育的等级分类，以及指导制订系统教育教学大纲的原理、实践和哲学。

This paper reviews the classification of degrees of systems education at the university of Hull, the principle, practice and philosophy dominating the teaching pro-gram of systems education.

youdao