Perhaps you should try some spelling variations:
mechanical processing » mechanical properties (Expand search), mechanical testing (Expand search), mechanical harvesting (Expand search)
decreased mechanical » compressed mechanical (Expand search), selected mechanical (Expand search), based mechanical (Expand search)
in decreased » is decreased (Expand search), in deceased (Expand search), and decreased (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decrease in decreased mechanical processing ) OR ( decrease NOT decrease to decrease ))*.