experienced hand in blue protective glove carefully collects water from river, portraying work of aquatic environmental scientist - 水樣本 個照片及圖片檔水質污染
biologists and wastewater treatment experts conduct water quality simulation experiments. at the wastewater treatment plant - 水樣本 個照片及圖片檔化學品, 污水處理廠, 職業
environment engineers sample and test toxic wastewater from factories, environment control in the industrial estate - 水樣本 個照片及圖片檔檢查, 污染, 專長
safety and environmental engineers are checking the water quality at a wastewater treatment plant in the industrial estate. - 水樣本 個照片及圖片檔污水處理廠, 安全, 工作
environmental and testing laboratory solutions. african american scientists hold aquatic toxicity testing or biomonitoring examining in a plastic bottle in an environmental laboratory. - 水樣本 個照片及圖片檔科學家, 實驗室, 檢查
ecologist collecting water sample from forest lake for environmental testing. researcher crouches on moss-covered rock at water's edge conducting field research on freshwater ecosystem quality. - 水樣本 個照片及圖片檔
water quality test, environmental engineers wearing ppe sample inspect water quality , industrial and environment - 水樣本 個照片及圖片檔實驗室, 危險, 技術
asian female environmental scientist analyzing water pollution in the rainforest. conducting fieldwork to assess water quality and contamination. focused on environmental conservation and pollution analysis - 水樣本 個照片及圖片檔科學家, 大自然, 森林
safety and environmental engineers working on the sunlight at a wastewater treatment plant in the industrial estate by walking around and checking the quality of the water - 水樣本 個照片及圖片檔污水處理廠, 工程師, 工業
safety and environmental engineers examining the water sample from the wastewater pond on a sunny day - 水樣本 個照片及圖片檔工程師, 污水處理廠, 服務
