1944 man checking valves in large control room at goodyear synthetic rubber plant / los angeles, california, united states - 閥 個影片檔及 b 捲影像00:17
worker walking atop oil tanks / worker turning valve / oil refinery from above - 閥 個影片檔及 b 捲影像00:11水管
cu tu td zo auto mechanic replacing valve stem and filling tire with air at auto repair shop / chelsea, michigan, usa - 閥 個影片檔及 b 捲影像00:23
hands of dentist working inside woman's mouth / two close ups of hand using pencil to write shorthand in notebook / hands unlocking and opening safe... - 閥 個影片檔及 b 捲影像00:49女人
ws tu td ventilation pipes running along ceiling of systems room in geothermal station, beijing, beijing, china - 閥 個影片檔及 b 捲影像00:19地熱發電廠
ws light shining across pipes and gauges in dark systems room of geothermal station, beijing, beijing, china - 閥 個影片檔及 b 捲影像00:22
cu la light shining across pipes and gauges in dark systems room of geothermal station, beijing, beijing, china - 閥 個影片檔及 b 捲影像00:23地熱發電廠
cu light shining across pipes and gauges in dark systems room of geothermal station, beijing, beijing, china - 閥 個影片檔及 b 捲影像00:04
ws light shining across pipes and gauges in dark systems room of geothermal station, beijing, beijing, china - 閥 個影片檔及 b 捲影像00:18
shot of a brass valve being turned by a crew member in the cabin of the flying scotsman - 閥 個影片檔及 b 捲影像00:13
close up shot of a brass valve being turned by a crew member in the cabin of the flying scotsman - 閥 個影片檔及 b 捲影像00:11
ecu tu td detail of diagram at tsinghua university's nuclear pebble bed reactor, beijing, china - 閥 個影片檔及 b 捲影像00:24
