巴克雷班级气氛量表
barclay classroom climate inventory
狄利克雷级数
Direichlet series
ordinary dirichlet series
Dirichlet series
合作性初级测验
cooperative primary tests
氨气和氮气气氛下热处理
annealing in ammonia and nitrogen
减压氩气气氛火花放电等离子体
reduced-pressure argon spark discharge plasma