( ( Together ( ( with ( its ( high resistance ) ) ) ( to corrosion ) ) ) ( , ( hafnium ( ( is ( used ( in ( ( neutron-absorbing ( control rods ) ) ( which ( ( ( ( slows down ) ( nuclear ( chain reactions ) ) ) and ) ( ( quenches ( chain reactions ) ) ( in ( nuclear reactors ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Together) (PP (IN with) (NP (PRP$ its) (JJ high) (NN resistance)) (PP (TO to) (NP (NN corrosion))))) (, ,) (NP (NN hafnium)) (VP (VBZ is) (VP (VBN used) (PP (IN in) (NP (NP (JJ neutron-absorbing) (NN control) (NNS rods)) (SBAR (WHNP (WDT which)) (S (VP (VP (VBZ slows) (PRT (RP down)) (NP (JJ nuclear) (NN chain) (NNS reactions))) (CC and) (VP (VBZ quenches) (NP (NN chain) (NNS reactions)) (PP (IN in) (NP (JJ nuclear) (NNS reactors))))))))))) (. .)))
Together with its high resistance to corrosion, hafnium is used in neutron-absorbing control rods which slows down nuclear chain reactions and quenches chain reactions in nuclear reactors.
(ROOT (S (NP (NNP Control) (NNS rods)) (VP (VBP play) (NP (NP (DT an) (JJ important) (NN role)) (PP (IN in) (NP (NP (DT the) (NN modulation)) (PP (IN of) (NP (DT the) (JJ nuclear) (NN chain) (NN reaction))))))) (. .)))