贺词逢百庆贺，已成惯例。《暖通空调》从１９７５年第１期问世，至今年第６期正好出满百期，自然要用自己的方式庆贺。细细回顾《暖通空调》百期的编辑出版发行历程和业绩，由衷感到确实应该庆贺。刊物刊期从季刊开始发展到双月刊，页码从４８页增加到含广告插页达８０页... Congratulations on every hundred celebrations have become a common practice. “HVAC” came out in the first period of 1975, and it was just over a hundred periods until the sixth period of this year. Naturally, we must celebrate in our own way. A careful review of the editing, publishing, and distribution history and performance of the HVAC Hundred-Year period is truly a matter of congratulations. The publication period starts from the quarterly issue to the bimonthly publication. The page number has been increased from 48 pages to 80 pages with ad insertions...