公设

postulate (math.) / public facilities (abbr. for 公共設施|公共设施[gong1 gong4 she4 shi1])

public / collectively owned / common / international (e.g. high seas, metric system, calendar) / make public / fair / just / Duke, highest of five orders of nobility 五等爵位[wu3 deng3 jue2 wei4] / honorable (gentlemen) / father-in-law / male (animal)

to set up / to arrange / to establish / to found / to display

(Tw) shared-facilities ratio (expressed as a percentage of the total floor space of a building)

the parallel postulate (geometry) / Euclid's fifth postulate