2) professional development activities
专业发展活动
1.
This article describes and comments on the characteristics of American teacher educators in career and technical education,including the profile of American vocational technical teacher educators,professional development models and teaching approaches teacher educators prefer,expertise of teacher educators,and teacher educators own professional development activities.
本文旨在通过描述与评论美国高等学校职业技术教师教育者的外观基本情况和职业技术教师教育者在职业教师培养中喜欢运用的专业发展模式、教学途径、最常任教的课程及科目、自身所进行的专业发展活动等,期望使读者对美国职业技术教育师资培养培训与高等学校职业技术教师教育者的一般特征及整体素质有所了解。
4) development of man's spirit activities
精神活动的发展
5) promote development in students activities
以活动促发展
6) mainstream development activities
主流发展活动
补充资料：金属材料发展史(见材料发展史)
金属材料发展史(见材料发展史)
history of metallic material
金属材料发展史historyor metalli。material见材料发展史。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条