加压

to pressurize / to pile on pressure

to add / plus / (used after an adverb such as 不, 大, 稍 etc, and before a disyllabic verb, to indicate that the action of the verb is applied to sth or sb previously mentioned) / to apply (restrictions etc) to (sb) / to give (support, consideration etc) to (sth) / Canada (abbr. for 加拿大[Jia1 na2 da4]) / surname Jia

to press / to push down / to keep under (control) / pressure

see 壓根兒|压根儿[ya4 gen1 r5]

pressure chamber / pressurized cauldron