-
To cancel, please cancel before the registration cut-off system.
如需取消，请在报名系统截止前取消。
youdao
-
It is applicable for vacuum system to cut off or put through the airflow.
适用于真空系统中，用来切断或导通气流。
youdao
-
It is applicable for vacuum system to cut off or put through the airflow.
适用于真空系统中，用来切断或导通气流。
youdao