[经] 总括保险单, 统保单

Blanket mortgage \Blanket mortgage\ or Blanket policy \Blanket
policy\ .
One that covers a group or class of things or properties
instead of one or more things mentioned individually, as
where a mortgage secures various debts as a group, or
subjects a group or class of different pieces of property to
one general lien.
[Webster 1913 Suppl.]