It actually depends on the OS, some OSes will use a single TCP/IP socket to connect to the filer, which makes only one link usable.
Some other OSes will use multiple connections, in that case you give a chance to LACP to balance the traffic across multiple links.
For example, when creating the vif "-b port" lets you balance when the port used is different, even if source and dest IP are the same.
You would have to consult the documentation of your OS to see how to use multiple connections for a single mount.
[I hope you read english, I was intrigued by the chinese message and google helped me translate ]