technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo 4k) - 出風口 個影片檔及 b 捲影像00:16
close-up shot of air conditioning condenser unit fan blades spinning in tennessee in late summer / autumn season change - 出風口 個影片檔及 b 捲影像00:13冷氣
oil refinery ventilation - sea oil drill ventilation - sea oil refinery ventilation - offshore oil rig ventilation - 4k resolution - 出風口 個影片檔及 b 捲影像00:11冷氣
maintenance workers or engineers wearing protective helmets and visibility yellow vests examining a new ac unit fan outdoors together and taking notes - 出風口 個影片檔及 b 捲影像00:22冷氣
male electrician in protective yellow vest installing a new ac unit outdoors on a roof. repairing the fans and radiators - 出風口 個影片檔及 b 捲影像00:24冷氣, 辦公室
oklahoma city, ok, u.s. - thermostat and vents inside an oklahoma home, high electric bills amid sweltering summer conditions on thursday, july 19,... - 出風口 個影片檔及 b 捲影像00:30冷氣
young asian female industrial engineer in hard hats checking steam boiler in chemical manufacturing factory. heavy industry and engineers team. - 出風口 個影片檔及 b 捲影像00:24冷氣
up angle of air ducts, shaft or large vent in a building. see black rope dangling along left side of shaft. thief or robber in black clothes and a mask descends down rope head first. criminal spins feet first before getting to bottom. pulsing white lights - 出風口 個影片檔及 b 捲影像01:20
detail of a streamlined vent on a classic luxury wooden runabout boat. - slow motion - 出風口 個影片檔及 b 捲影像00:08
wide angle of large, lit furnace in dark, dusty, cluttered basement. see air ducts extending along ceiling from furnace. see flames through openings on furnace which resemble a creepy looking head and face. camera pans left to show creepy marionette o - 出風口 個影片檔及 b 捲影像00:36
ws tu td ventilation pipes running along ceiling of systems room in geothermal station, beijing, beijing, china - 出風口 個影片檔及 b 捲影像00:19地熱發電廠
traffic passes through new york city intersection and steam emitting from orange stack covering the street's manhole. - 出風口 個影片檔及 b 捲影像00:30
general view of the entrance to the pike river coal mine a year after deadly explosion - 出風口 個影片檔及 b 捲影像00:53
zoom in on blood smeared on corner of vent cover and dripping from air duct. hinges to reveal opening in ceiling. could be crime scene. - 出風口 個影片檔及 b 捲影像01:22
close angle of air duct or vent with rag or towel covering it. dirty 1970s walls - 出風口 個影片檔及 b 捲影像00:08
fan in modern cannabis lab farm greenhouse. cannabis farming ventilation system. blower flow air for cannabis farming control environment for medical industry. industrial fan heater and cooler. - 出風口 個影片檔及 b 捲影像00:15冷氣
ceiling ventilation installations, electrics, lighting and piping in a high-rise building in downtown bangkok - 出風口 個影片檔及 b 捲影像00:19冷氣
ceiling ventilation installations, electrics, lighting and piping in a high-rise building in downtown bangkok - 出風口 個影片檔及 b 捲影像00:35冷氣
air ventilation installed on a galvanized iron wall with a rusty metal surface. - 出風口 個影片檔及 b 捲影像00:09
aerial view of industrial hvac and piping system on the rooftop of the building. aerial view of industrial rooftop hvac and ventilation system. high-angle drone view of rooftop hvac units, pipes, and ventilation system on an industrial building. - 出風口 個影片檔及 b 捲影像00:11冷氣
