umbrella filter

• 伞滤器

umbrella filter的用法和样例：

例句

1. The filter is now ready for operation.
   这种滤器目前即将投入运转。
2. All the implantation of IVC filter and embolectomy were successful.
   所有下腔静脉滤器植入和手术取栓都获得了成功，效果明显。