( ( 7.2.4.3 Vibration ) ( ( ( should not ) ( diminish ( ( the performance ) ( of ( ( ( precision ( analytical balances ) ) and ) ( mass comparators ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP 7.2.4.3) (NNP Vibration)) (VP (MD should) (RB not) (VP (VB diminish) (NP (NP (DT the) (NN performance)) (PP (IN of) (NP (NP (NN precision) (JJ analytical) (NNS balances)) (CC and) (NP (JJ mass) (NNS comparators))))))) (. .)))
7.2.4.3 Vibration should not diminish the performance of precision analytical balances and mass comparators.
(ROOT (S (NP (DT A) (NN student)) (VP (MD should) (VP (VB use) (NP (DT a) (NN balance) (S (VP (TO to) (VP (VB compare) (NP (NP (DT the) (NNS masses)) (PP (IN of) (NP (CD two) (JJ small) (NNS rocks)))))))))) (. .)))