Double quality certificate system (whole vehicle quality certificate and chassis quality certificate) shall be practiced with respect to the products manufactured by vehicle conversion plants.
对改装厂生产的产品实行双合格证（整车合格证、底盘合格证）制度。
Double qualification certificate of native English teachers and cutting-edge study follow-up system.
双资格认可母语外教，尖端的学习跟踪系统。
Teaching reforms in training mechanism and patterns will be push forward with the system of "double-certificate" as the cut-in point.
以双证书为切入点，推进教学改革的培养机制与模式；
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