counterbalancing
對重平衡
Coun·ter·bal·ance v. t. [imp. & p. p. Counterbalanced p. pr. & vb. n. Counterbalancing.] To oppose with an equal weight or power; to counteract the power or effect of; to countervail; to equiponderate; to balance.
The remaining air was not able to counterbalance the mercurial cylinder. --Boyle.
The study of mind is necessary to counterbalance and correct the influence of the study of nature. --Sir W. Hamilton.
counterbalancing
adj : serving to equilibrate; "he added a counterbalancing weight"