a solar-powered water aerator operates in a farm pond, splashing water to improve oxygen levels. behind it, green crops and modern greenhouses highlight sustainable agriculture and eco-friendly farming solutions. - 曝氣器 個影片檔及 b 捲影像00:20再生能源
looking down at the circular abstract pattern brought about by the aerator's work in the water - 曝氣器 個影片檔及 b 捲影像00:18
looking down at the circular abstract pattern brought about by the aerator's work in the water - 曝氣器 個影片檔及 b 捲影像00:07
looking down at the circular abstract pattern brought about by the work of an aerator in a green body of water - 曝氣器 個影片檔及 b 捲影像00:14
aerial view of an aquaculture farm with aeration to increase oxygen to improve water quality - 曝氣器 個影片檔及 b 捲影像00:14
heavy agricultural vehicle carrying a load of compost with a spiked tool passes a worker spraying sewage onto a pile of straw at a site producing... - 曝氣器 個影片檔及 b 捲影像00:19
an industrial compost turner is used to churn steaming compost being produced on an industrial scale using recycled sewage and wheat straw, an... - 曝氣器 個影片檔及 b 捲影像00:23
'super compost' - nutrient-rich compost suitable for horticultural use - is made at site producing compost on an industrial scale from wheat straw, a... - 曝氣器 個影片檔及 b 捲影像00:21
close up shot of green aerator for food manufacturer waste water treatment - thailand. - 曝氣器 個影片檔及 b 捲影像00:26