Sentence:  Consider a shear field with a height of H and a cross-sectional area of A opposed by a manometer with a height of h ( <WSD>referred</WSD> to the same base as H ) and a cross-sectional area of a . 
Meaning of the word marked with <WSD> tags:  think of, regard, or classify under a subsuming principle or with a general group or in relation to another