WP_Term Object
(
    [term_id] => 71
    [name] => Mechanical Part
    [slug] => mechanical-part
    [term_group] => 0
    [term_taxonomy_id] => 71
    [taxonomy] => product_cat
    [description] => 
    [parent] => 0
    [count] => 28
    [filter] => raw
)

Array
(
)

Array
(
    [relation] => AND
    [0] => Array
        (
            [taxonomy] => product_visibility
            [terms] => Array
                (
                    [0] => 7
                )

            [field] => term_taxonomy_id
            [operator] => NOT IN
            [include_children] => 1
        )

    [1] => Array
        (
            [taxonomy] => product_cat
            [terms] => Array
                (
                    [0] => mechanical-part
                )

            [field] => slug
            [operator] => IN
            [include_children] => 1
        )

)
Array
(
    [join] => 
    [where] =>  AND ( 
  0 = 1 
  AND 
  th_posts.ID NOT IN (
				SELECT object_id
				FROM th_term_relationships
				WHERE term_taxonomy_id IN (7)
			)
)
)

Array
(
)